Tag: Travel

The Evolution of Travel

Nothing is stationary. As our solar system circulates the milky way and everything we know is in motion. Nature abhors the stationary. Movement is a part of all living things. Even on dead worlds, like Mars, dust devils whiz across barren surfaces to get caught on camera.

The more we move the more we change. History’s long tail shows that the rooting of people to a place is a temporary affair. What’s changed is our means of locomotion. In the stone age great distances were traversed but not in a hurry. Speed is a modern acquisition.

It is modern. Where I live now is, and has been, a route from East to West and vice versa for much more than a thousand years. For most of that time either our feet or horses where the means of locomotion. Time had to be set aside for perilous and uncomfortable journeys

Travel is a wonderful experience. Even if the time spent between A and B is tedious, draining and eventful in an unwanted way. Adventure beckons in a manner that has always overcome the inconvenience. Certain airlines would never have succeeded if comfort was a must.

In the 17th century getting from London to Bath was a major undertaking. A speed of 30 or 40 miles per day on rain-soaked roads of poor repair there was need to rest up and take a journey in stages. It’s these habits that have shaped the view of traditional England. Gone are the toll houses and the highwaymen but the routes and public houses remain. Well, fewer and fewer of them as business is tough[1].

Travel is that perennial hope, that there is a silver lining to every cloud, that good times are only just around the corner. That in travel we will see, hear and experience something new and to our benefit. It’s not a free lunch. Effort must be made to reap this benefit. It’s there in the word. It’s the Norman-French origins of travel. Travail is to work and labour.

Ironically, although there are exceptions, modern society is trying to make travel as little effort as is possible. Even to the extent of automating vehicles when the demand for such innovations is minuscule. It’s not increased comfort or convenience that’s the aim. No, it’s to dissect time into even smaller parts so that people do not “waste” time travelling.

In an age before concrete and steel carved a path through the English countryside, a journey was a venture to be planned and considered with trepidation. A land of fields and meadows, rivers and streams, and notoriously changeable weather.

Comparisons with today do fall by the wayside. Towards the end of the 17th century the population of the whole of the country was only about 5 million. Creeping industrialisation was drawing people into the cities. Change was on the way.

[1] Hard Times of Old England https://www.youtube.com/watch?v=MoWEiq_Z0aw

A Day at the Bath and West Agricultural Show

It’s a part of my childhood. It’s fascinating to see how it has changed over the decades. There’s hardly a year go by when I don’t go to at least one agricultural show in the UK.

Last year, I visited the Lincoln show and the Newbury show for the first time. Most of the summer rural shows in the UK have a long history that is kept going by an Agricultural Society. The bigger ones have dedicated show sites and some permanent buildings. The smaller ones can be a large field that’s set aside for a couple of days a year. Each show reflects the nature of the farming, the crops, the animals, in its region.

This Friday, my day out was a trip to the Bath and West show[1] in Somerset. The show site is large. Spread over a south facing gently sloping hillside. To the south of the town of Shepton Mallet, at the base of Prestleigh Hill.

That’s my family connection. My mother grew-up on a small farm in Prestleigh. It’s not named on the map anymore as a couple of the buildings are now dwellings. Yew Tree Farm was situated on a dangerous bend on the main A371 road where traffic must veer right as it comes down the hill. The alternative being to hit a wall and end up in the farmyard. If I remember correctly, my grandad got free tickets to the Bath and West as they used one of his fields for a car park. As children we would hop over the fence to go straight to the show.

This year, the ground was as hard as rock underfoot. Spring has been unusually dry. There’s more dust than mud. That’s good for the show. There have been years when the wind and rain have swept the exposed show site and blown down tents and made mini rivers. Making welly boots mandatory.

What has changed? Although this annual event is predominantly a showcase for West Country food and farming it’s gone beyond that formula to become an atypical half-term family day trip. It’s no longer a place where local farmers strike deals with machinery salesman or learn about the latest breeds or cropping methods. That post-war image of mucky tractors and trailers turning up in droves is for vintage postcards.

What’s nice is that there’s something for everyone with an interest in the English countryside. Beekeepers, cider markers (and drinkers), cheese makers, traction engine enthusiasts, rare breeds, heavy horses along with tea and cake in the WI tent.

Sheep started big this year. Cattle and pigs less so. Again, the word is enthusiasts. Breeds rare and commercial ones all cleaned up for display and judging. Handlers, young and old, parading their animals for picky judges to prod and score. Then colourful rosettes displayed with pride.

It’s not a cheap day out for townsfolk and county people anymore. Car parking might be free but the price of entry and just about anything on-site can quickly rack up. Everywhere, even in a field, we have become a cashless society. A tap here, a tap there, no longer do we dig into our pockets for loose change.

For the good weather and crowds, I expect this year’s 3-day event will be evaluated as a great success. Keeping the tradition going.

[1] https://www.bathandwest.com/royal-bath-and-west-show

Peaceful Border

It’s superfluous to say so. Canada is not the US, and the US is not Canada.

It quickly becomes clear. I’ve been fortunate to visit places east-west and north south. Although not the far snowbound North. The two countries do share geography. Rocky Mountains stretch across the North America. From British Columbia to New Mexico. The Great Plains span North America. A stark contrast to the mountains, as a huge expanse. In the East, the rolling landscape of the Appalachian Mountains runs from Newfoundland to Alabama.

It’s not the same with social and economic geography or history. A profound difference has been forged by Canada’s citizens over a couple of hundred years.

If we look back to the late 17th and early 18th centuries the new world was a hugely different place than it is now. Britain, France, Spain, and their allies were fighting over vast territories. European conflicts translated into competition and trade wars. Eventually, America colonialist brought about a revolution, so there would be no need for royalty, aristocracy, or an imposed church. Rejecting their British masters, even if they did keep their system of laws.

At the start of the 19th century, the US did invade Canada with a couple of conflicts. So, the idea that the US may wish to annex a part, or all of Canada is not entirely new. I’m going to have to read up on the Battle of Stoney Creek of 1813. It seems a namesake of mine played a pivotal role in preventing the US from taking Canada[1]. No relation – I’m (almost) sure. Irish heritage.

My assumption is that US President Trump is doing what he has done times before. Mark out an extreme position from which then to shape future negotiations. That’s not so mad as it might appear. It’s not nice when considering the cordial relationships that have characterised so much of the recent past. Kicking at the sides of an ally.

Stretching over thousands of kilometres (or miles if you prefer), the boarder between the US and Canada is one of the most peaceful in the world. To reignite conflicts of a couple of hundred years ago is not a wise option. I’m sure Canada could call upon a great deal of support if the worst-case scenario were to prevail.

Mutuality may not be fashionable. It needs to be made fashionable, again. The notion of a win-win scenario where both parties benefit, it’s real, it’s not mythical. Both US and Canada are sovereign. It’s best for the world that it stays that way.

[1] https://www.biographi.ca/en/bio/vincent_john_7E.html

Avoiding Contrails and Enhancing Operations

Here I’m expanding on my earlier words on aircraft Contrails.

Airspace is a busy place. It’s most busy over Europe and the US. Over the oceans there’s more room, although on certain routes, like the North Atlantic, there’s plenty of daily air traffic.

Those who manage the airspace are primarily concerned with ensuring that aircraft collisions do not occur. The impact of mid-air collisions is devastating. There’re few people in aviation who can forget the events of an evening in July 2002. Over Überlingen, Germany[1], 71 people lost their lives at a time when the sky was not busy at all.

Managing the use of airspace is more than collision avoidance. Flying is perpetually concerned with the weather. What’s it doing, how is it changing and is it a hazard? It’s not just the safety of flying that demands up-to-date meteorological information. Knowing about the winds can enable more efficient operations, and that’s less fuel use for a given route.

Large thunderstorms need to be avoided. Regions of the world (example: intertropical convergence zone) make this a dynamic challenge. Manoeuvres may be planned but flight crews must be ready to act based on the information they have, like weather radar.

Turbulence is another phenomenon to be avoided, if possible. This can occur in clear air. It can be difficult to detect. Which explains the unpleasant examples that hit the News now and then[2].

Back in 2010, aviation had a reminder that avoidance encompassed any hazardous airspace. That was when an unpronounceable volcano in Iceland was spewing out ash at high altitudes. Plumes of volcanic ash, if ingested into aircraft engines, can cause major difficulties.

I’ve written these words to emphasise that the avoidance of contrail formation cannot be done as a stand-along consideration. It becomes one factor in a whole mix of factors.

Avoidance of contrail formation is about considering the mechanism that cause them to form. Clearly, the warmer the air is the harder it is for a contrail to form. The more humidity there is in the air, the easier it is for a contrail to form. Outside Air Temperature (OAT) and atmospheric humidity vary at each altitude. That relationship interacts with the aircraft inflight, and the outcome may be different for each aircraft type.

At least one academic study[3] says that adjustments of aircraft altitude of around 2000 ft could have a useful effect on contrail formation. That’s good to know but let’s not forget that Reduced Vertical Separation Minima (RVSM) [4] means a vertical spacing of 1000 ft in busy airspace.

My take on this fascinating subject is that there both a tactical and operational approach that can be practically taken by aviation.

At the tactical level, airlines can factor contrail avoidance into flight planning. Creating an algorithm that will weigh all the relevant flight factors. Improved sources of accurate and timely meteorological data and predictions will be needed.

At the operational level, it’s down to the flight crews to take advantage of environmental conditions as the opportunity arises. Much as dealing with turbulence, that is when safety and operational rules permit. To change altitude when its beneficial, computational help is likely to be needed. Over the ocean, air-ground communications systems may need to be further improved. An altitude change that avoids contrail formation but increases fuel consumption would not be a sustainable solution.

These computational tasks may well be well suited to machine learning. A useful application of artificial intelligence. I can imagine a cockpit weather radar display with a new set of symbology that indicates a low probability contrail formation zone ahead.

[Back in the 1990s, I worked on RVSM when the ARINC organisation was creating international standards. Safely increasing traffic in the North Atlantic region. Additionally, I participated in the certification of Future Air Navigation System (FANS) 1/A for use over the ocean. FANS led to more efficient aircraft operation due to shorter flying times and decreased fuel burn.]

POST: Looks like data crunching is underway Flight plans, but greener: The ICCT and Google’s mission to refine the Travel Impact Model – International Council on Clean Transportation

[1] https://www.bfu-web.de/EN/Publications/FinalReports/2002/Report_02_AX001-1-2_Ueberlingen_Report.pdf?__blob=publicationFile&v=1

[2] https://www.flightglobal.com/safety/turkish-777-rapidly-descended-during-crews-aggressive-response-to-turbulence-encounter/162937.article

[3] https://www.imperial.ac.uk/news/195294/small-altitude-changes-could-contrail-impact/

[4] https://skybrary.aero/articles/reduced-vertical-separation-minima-rvsm

Understanding Contrails

Crisscrossing the sky, as I look up on a clear day, there are civil aircraft going about their business. People travelling across the Atlantic or coming back or on a day trip to Glasgow.

These shiny pinpoints of light in motion, set against a blue sky, are all the more visible because of the vapour trails they leave behind. Aircraft speed through the rarified atmosphere to leave a momentary trail as evidence of their presence.

Up with the aircraft in flight are natural clouds. Up at 30,000 feet there can be Cirrus clouds[1]. There might not be much air pressure at that altitude but there’s enough moisture to support cloud formation. The word “wispy” sums them up.

Aircraft create condensation trails that are known as contrails. How the English language likes to shorten. They are not mysterious or generate with evil intent in mind. It’s simple physics.

In my bathroom, with hot water gushing from the shower, moisture is the air. When that moist air meets a cold surface, like a window, condensation is sure to be seen. Airbourne it’s not so different. Hot emissions from powerful jet engines shooting out into a cold low-pressure environment and guess what?

Typically, contrails don’t last long. If there’s appreciable wind at high altitude, then they get dispersed quickly. Not only that but the icy temperatures up there soon return things to the status-quo. There are days, when the air is still, that the sky can become a crisscross of contrails where dispersion is more like a gentle merging.

The theory goes that the cumulative impact of lots of high-altitude flying is like the impact of additional cloud formation. It’s water vapour after all. It’s known, high altitude clouds can contribute to the greenhouse effect.

The point I’m getting to here is that lots of flying contributes to climate change. Primarily because of the burning of significant amounts of fossil fuel. As a secondary consideration there’s the issue of contrails across the globe.

This leads to the question – can their formation be avoided? Even, is there something useful to be gained in doing so. Trials and research are trying to establish the answer to these questions[2].

Initially, contrail avoidance sounds like it should be relatively easy to do. However, like so many good proposals it’s not so easy. Change needs to involve air traffic management, flight operations and international regulators.

First the atmospheric conditions need to be detected or predicted in a given location and then an avoidance needs to be planned and undertaken in coordination with everyone flying at high altitude at a given time. Lost of data to crunch.

It’s possible, in oceanic airspace, a dynamic aircraft system could perform this avoidance function. It would be an interesting design challenge for an avionics company to take up.

#Net Zero #SustainableAviation

[1] https://weather.metoffice.gov.uk/learn-about/weather/types-of-weather/clouds/high-clouds/cirrus

[2] https://news.aa.com/esg/climate-change/contrail-avoidance/

Relationship with the EU

Monday, Monday[1]. It’s a wonderful 60s song. Harmonies and mood are perfect. I wonder if the harmonies and mood will be perfect for the Prime Minister (PM) on Monday. Already the Sunday Press are setting the stage for Monday’s performance.

Reset, recalibration, reheat, rekindle, re-whatever. It’s a moment when relations between the UK and the European Union (EU) can make realistic progress[2]. In world full of uncertainty (could be a song in that one), for once the direction of travel is a constructive and positive.

I think the word “deal” is getting overplayed. Indications are that there’s no fundamental shift from Brexit meaning Brexit, as one former PM liked to say. In fact, the current PM is being highly cautious in the light of his Party’s reading of the latest opinion polls. For no sane reason I can think of, the swivel-eyed loons of the far-right are making hay.

It’s astonishing me how dim-witted the Conservative Party is in objecting to something when they don’t even know, for sure, what it is. Mind-blowing. And the rum cult of Reform Party doing the same with extra bile. What a load of prehistoric fruit loops.

Brexit supporters are spreading misinformation, again. Saying that UK has no influence. It’s true, the UK doesn’t have votes in the European Council or Parliament, but significant influence can be exercised on standards, and regulatory guidance, nevertheless. A better “deal” can bring much greater influence. Absolutely vital in the digital world, and for the UK, a country with a services-based economy.

Brexit has cost the UK dearly. The UK Treasury would have billions more in its coffers if the 2016 referendum had never taken place. The standard of living of every person in the UK is lower because of Brexit bungling. Ideally, that great mistake is an event to be written up for the history books and then forgotten.

On top of the above, uncharacteristic moves in the US, with Trump tariffs there’s nasty hit at the UK’s future prosperity. There couldn’t be a better time to repair relationships with the UK’s nearest neighbours. The countries with which we share most of our long history.

Even for those on the political right, practically, the EU is never going away, so until the day the UK rejoins the block, it’s wise to have the best possible relationship in all matters. Goods, services and people need to connect as a case of mutual benefit.

It’s time for hope. An optimistic tone should be set. A smile. Let’s hope we are singing Monday, Monday so good to me, Monday morning was all I hoped it would be. Naturally, that there be no crying, come Monday evening.

[1] https://genius.com/The-mamas-and-the-papas-monday-monday-lyrics

[2] https://www.independent.co.uk/news/uk/politics/brexit-uk-eu-reset-trade-deal-starmer-b2752285.html

Sustainable Aviation: Innovations and Challenges

Gas guzzling continues to be one of aviation’s problems. Combustion remains that the heart of most aircraft power plants. Taking large amounts of fossil fuel. Squeezing energy out of every drop of gasoline. Gobbling up more day after day. Pushing out emissions.

As I look out across the garden, I see gliding effortlessly as the warm air rises, a Red Kite[1] gracefully circling. Wings outstretched they hardly move them as they climb. They’re a distinctive small bird of prey, easily spotted because of their forked tail. Now, that’s what I call efficient flying. Using all that nature provides and wasting little energy.

Human attempts at flying are a million miles behind these magnificent birds. There’s still so much to learn about aerial navigation. It’s a matter of control. The sensing of ambient conditions and the precision movements needed to ascend and dive at will.

The search is on for effective change. There’s no pretence that the way commercial aviation operates is unsustainable. It’s true that the gas guzzlers of the air guzzle less gas now than they ever have but the physical facts remain.

None of this is new. I’m about to send a book called “Towards Sustainable Aviation” to a charity shop. It’s not that there’s anything wrong with it. The book is full of pertinent analysis and observations. Trouble is that it’s dated 2003.

I’m led to ask – what’s changed in over 20-years? In answering my own question – quite a lot but not enough. Discourse has moved on from academic quarters to the political sphere. Aircraft have become more fuel efficient. Driven by economic imperatives as much as any concern for the climate. Research initiatives are generously funded to come up with answers. Solutions like hydrogen, electric propulsion, and SAF (sustainable aviation fuel) are slowly moving from theory to practice. A few prototypes are flying. Limited supplies of SAF are flowing.

Unmistakable that’s where the problem lies. For all the hype, policy and government funding the pathway to genuinely sustainable aviation disappears way off into the horizon. There are setbacks too. Gas guzzling is back in fashion. Certainly, in Trump’s America.

We could make a much more of the technology that’s currently available. Yes, there are costs involved. Change is not a free ride. That said, sticking with the status-quo isn’t free either. Legacy costs mount up. One reason why older jets disappeared from fleets so quickly.

The next generation of commercial aircraft must make major steps forward. Since the life of a typical aircraft type can easily extend to 30-years, then change must happen in design now.

Typically, commercial aviation moves with graduated change. There’s an inherent conservatism in the system, as might be expected when safety and security are paramount. Facing this global challenge, there’s a need for a degree more radicalism.

Since high impact disruption is also in fashion, it’s time for airlines and manufacturers to adopt a pioneering spirt. It’s been done before. In the 1960s, that pioneering spirt gave us the Boeing 747, the Jumbo jet. That opened flying to a whole generation.

[1] https://www.rspb.org.uk/birds-and-wildlife/red-kite

Exploring a Riverside

Riverside walks can be pleasant ways of spending a sunny spring evening. That’s what I did on Friday. Sun shining with a cool breeze sweeping through the trees. Underfoot even the unmade-up paths were dry, which is testament to the rainless weather of recent weeks. Even so, the riverbank showed signs of the flooding of the winter.

Reading is a town[1]. It’s England’s largest town. Now, I didn’t know that until I looked it up. The largest English town that I’ve been familiar with over the years is Crawley in Sussex. I think of that as a large town but it’s less than half the size of Reading. It’s the railway that makes Reading. Reading railway station was the last stop on the Great Western Railway (GWR)[2] when it was first opened in 1840. After that the railway forged west to be what we know now as the main thoroughfare across southern England.

Reading town has a long history. That’s no surprise given its position on the river Thames. It’s where the river Kennet, the canal and the river Thames meet. An obvious place for trading since Roman times. It’s a commercial town. Glass sided office blocks and Victorian brick work. For all that it doesn’t stand out as an architectural masterpiece.

Another surprise for me was leaning that town twinning is alive and well. That Reading in twined with Düsseldorf in Germany. A city more than twice the size of Reading. In fact, until this last year, I’ve been more familiar with Düsseldorf.

Our walk ended at The Fishermans Cottage[3]. I’m happy to recommend this small riverside pub.

From there, on the walk back to the railway station I did see the one of the more notable sites in Reading. That’s the Banksy’s Great Escape artwork[4] on Reading prison wall. Oscar Wilde spent time in that jail. The artwork has got a Perspex cover to keep the pigeons off. And anyone else who might think of spraying it.

That reminds me. It’s not unusual to have a phobia about dogs. Although dog owners mostly have a difficulty in getting their heads around the fact. On my riverside walk dogs were not the problem. Amongst our small group of walkers had a different phobia.

As we got to the confluence of the Thames and the Kennet, we discovered the phobia of one of our walkers. Alfred Hitchcock would approve. The Kennet’s tow path attracts Swans. These Swans are attracted by people with food. With no inclination to get out of the gently flowing river these lazy Swans wait for passers-by to pay attention to their needs. That’s no problem.

It’s called Ornithophobia. A fear of birds. Birds flock when free food is on offer. The worst of these can be thought of as flying rats. I talk of pigeons. That how I think of pigeons. Tom Lehrer[5] had the right idea about these annoying birdies. Frightening them away, at least for a moment, cleared our pathway. Like a flash they returned as we strolled into the pub.

[1] https://www.reading.gov.uk/

[2] https://www.gwr.com/stations-and-destinations/travel-inspiration/blogs/history-of-the-railways

[3] https://www.tripadvisor.co.uk/Restaurant_Review-g186363-d7363678-Reviews-The_Fishermans_Cottage-Reading_Berkshire_England.html

[4] https://banksyexplained.com/create-escape-march-2021/

[5] https://youtu.be/yhuMLpdnOjY

Cities Shaped by War

War is failure. Humans being quick to aggression, possessive and slow to reconciliation, it’s plagued every corner of history. Reason to go to war can be imperial, territorial, moral or ethical. In a democratic society, defeating an evil becomes an overwhelming imperative. That was certainly the case in the six years of the second world war. This week, it’s time to look back. To recollect the impact of the world war. To remember the sacrifice and suffering. To be thankful for the last 80-years years of relative peace in Europe.

For me these recollections take me to the experience of living in two cities. Cities on different sides of past conflicts. Severely damaged by the conflict. Targets because of their civic and industrial strength. Both cathedral cities with an ancient heritage.

My student life was spent in Coventry[1]. A decade of my working life was spent in Cologne[2].

Arriving as a fresh-faced student in the heart of the industrial Midlands, the architecture of Coventry city centre was so striking. It was that post-war vision of rebirth at a time when economic decline had set in. With an inner ring-road that was like a go-cart track, 50s style concrete avenues, windblown and neglected, there was little of the Medieval splendour of the pre-war city remaining. Standing proud in the middle of it was, and is, the skeleton of the old cathedral and the new one that ascended like a phoenix from the flames of war. Well worth a visit, the cathedral built in the 60s is a wonderful modern design. It plays with light and space to elevate emotions. A sign that we have a great capacity for reconciliation and regeneration.

Moving on just over 20-years, my encounter with Germany’s fourth largest city was full of hope and optimism. Based in Cologne, I experienced a city with even deeper roots than Coventry. Ironically, it was the destruction of the war that uncovered much of the Roman remains on display. At Cologne’s heart is a magnificent gothic cathedral that is more dominating of the landscape than perhaps ever it has been. Here the citizens of the city took a different approach to post-war rebuilding. Not so much embracing everything that was new, although there’s quite a bit of that approach, but reconstructing the old city in its original style. The culture of the city survives in the traditions of the annual carnival.

These two European cities have taken different paths. All the same, there are threads of common experience. Both have seen industrial decline and a search for a better future to thrive and grow. Both are distinctive and culturally colourful. Both carry the baggage of a brutalist architecture that was fashionable on the drawing boards of the late 1950s.

Visting the past in museums and walking the streets the marks of the last war are there to be seen by everyone. Passed by every day. Yet, mostly ignored in the humdrum of commuting and the busy obsession we have of staring at a “mobile” or call it a “handy”. Now and then it’s as well to look up. To look and see the bullet marks on stone structures, the nicely arranged medieval or Roman stones and cobbles, or the conserved streets that contain the ghosts of past generations. For good or ill, war has shaped the world we inhabit.

Peace is a far far better condition. I think of the “Coventry Cross of Nails[3]” as a symbol of reconciliation and peace. Let’s not forget.

[1] https://www.coventry.ac.uk/

[2] https://www.koelner-dom.de/en

[3] https://www.coventrycathedral.org.uk/reconciliation/community-of-the-cross-of-nails

Travel’s Societal Impact

Privilege is all around us. It’s, by definition, not equality. It’s a privilege to live in a country not torn by war or where the environment has not been decimated. It’s a privilege to be able to protest and strongly disagree with the powers that be. Indeed, in this country it’s a right too.

Debates about the moral or ethical grounds of inequality will never cease. That’s a hope of mine. For the minute we become timid and cowed by an authority that would rather supress such debates, then that’s the end of our democracy. We’d be free no more.

A large part of my career has been in the aviation industry, in one way or another. Putting aside the military uses of aviation, that’s another debate, civil aviation and the travel industry are two peas in a pod. Flying facilitates travel. Largely international travel. Apologies to the cargo industry, leisure flying and so many others.

One phenomenon that is not new, is that of raising the issue of responsibility. For example, the consequences of tourism to natural environments are often negative. Not always so. Huge effort is made by some countries and organisations to make tourism a positive. However, generally there are significant challenges to be grappled with in making travel affordable for all.

Wealthy young Europeans have been roving across boarders as part of a rite of passage since the 1600s. A “Grand Tour” was a form of discovery, education and cultural enrichment. Today, a student might call that a gap-year. Time taken out of formal studies to travel abroad. The aim, as well as having fun, is to return a more rounded person ready for whatever life might throw up.

Where do we sit as a society in terms of the balance between personal freedom and our collective responsibilities? Are activists right to attempt to slam or shame travellers for the negative impacts that they can trigger? These are uncomfortable questions. Ironically, these difficult questions are often raised by the people who have enjoyed the privilege of travel.

In my mind, a debate on this subject of balance reflects greater societal issues. When we look at a basic hierarchy of human needs then international leisure travel may not be top priority. However, life would be less rich and colourful without it. Embarking on an epic journey, that takes a traveller outside their comfort zone, can be a life changing event.

To defend the freedom to travel, I cannot avoid looking at the other side of the equation. There is an overwhelming responsibility to do something restorative. Ignoring the impact of travel, particularly civil aviation, is not an option anymore.

I know there are some politicians who scream for the abandonment of Net Zero policies and all they entail, but they are extremely foolish. Shifting the burden onto future generations is reckless. Appealing to those who want to escape the debate, or force a return to mythical age, is nothing more than doomed short-termism.

This is one reason I’m an advocate for electrification and the exportation of radical solutions, like hydrogen powered civil aviation. Technological solutions are part of the path to take. That, in of itself, may not be enough but at least engineering change is permanent.

Solutions by design are far more powerful than ephemeral political posturing. Legislation can be overturned in a weekend. A whole new way of operating aviation can be sustained for decades.