It's cheaper to fly to Spain, than to get the train to Newquay...so wether its sustainable or not, people will use it

Dunno, ask the billionaires who want to ban people flying in their hundreds, while they sit alone on a jet.

Am I the only one that would dearly love to see big spacious airships reintroduced, where one can mover around, instead of having to stay seated in a tiny seat. I'd happily have the journey take 2 or 3 times as long, rather than be sat between two obese people, overflowing onto my seat, for several hours. Airships could be both sustainable and comfortable.

As the world is today. Nothing is sustainable.

Whats the carbon footprint of RAF, USAF and all the other airforces? What about private jets etc?

Nothing wrong to dream bigger & faster, when engineering is all about turning a theory into reality. But if you really want to travel one country to the next, invest in trains. Planes will always use more energy than trains.

in the meantime it is a highly taxable activity

Solar electric blimps

Hydrogen is a terrible fuel from an energy-density and price perspective. To be fair, this was kind of acknowledged in the video but nobody should be holding their breath right now while waiting for this to happen. Good old fossil fuel will be the airline industry's only option for at least another decade or two.

No ! Energy wise far to costly. Rail is still quite efficient.

I think it will take a generation or more before we see commercial hydrogen aeroplanes & I cannot see it will work for Emirates alike

The 70,000 who flew to COP28 in Dubai say, “Yes”, but only for them.

Typical having someone complaining about the emissions involved in constructing the technology, without actually challenging that and asking how many emissions are used to construct conventional aircraft. Also emissions to construct the technology will be coming down. Electric mining trucks are starting to be rolled out, the transportation of minerals that have just been mined would normally be trains which can be electrified as well as ships and the shipping industry has it's own plans for going zero carbon. Then there are smelting works to process the metal and hydrogen power smelting works are coming on line with one currently already fully operational in Sweden, and then there other transportation emissions where trucks are already going electric as well as factories relying on the power grid which is going more and more green as the years go on. So the emissions for constructing the aircraft will be involving less and less CO2 as different parts of different sectors have their own advancements, until in the distant future constructing the aircraft will have zero CO2 emissions.

Of course it will. If humanity lives long enough, everything will be sustainable. Air flight will be easy in terms of many others..

Nah..just use fusion innit!

I don't know much but wording nucléaire be and option like submarines ? Elimited power for ever. Don't even know if it something posible 😂

Honeslty I don’t want to hear about normal flights not being sustainable until private jets are banned 🤦‍♀️

No. Next question.

How many airmiles has Attenborough and his 50 strong team of monkey photographers got under their belt?

NEIN!

It is hope, an alternative to fossil fuels, indeed it will be less emissions a cleaner planet 🌏

Flying never harms the environment when Greta Thunberg or Emma Thompson does it.

airplane transport is ridiculously cheap and all the damage it causes is not factored into the price. this needs to change globally. carbon emissions (and certainly the more harmful emissions like methane and ozone) need to get factored into the price of things. people need to feel the damage it causes - in their wallet. then suddenly, all these fairy tale dreams of clean transport become true. we have the tech, we just have to apply it properly

Dirigibles! Dirigibles!

The great thing about aviation is that what cuts emissions also cuts costs for airlines, so they have an great inscentive to become more sustainable, and hey, aviation is one of the fastest improving fields when it comes to emmissions.

Helium Blimp.

It is amazing how so many people mistakenly think that the Wright brothers were the first to fly when a simple Google search would let them know that it was a guy called Santos Dumont in France.

Aviation is 2-3% of the emissions, maybe start with the low hanging fruit? Like no use of natural gas for heating and cooking.

Nice thumbnail that image has been cycling through w the other auto-prompts on my echo device for a few weeks now right alongside suggested quinoa recipes & surveys asking if I prefer my eggs scrambled or fried 💀💀💀

🦅🦅 let's fly

編劇有沒有去＜榮升刻印店＞問鳳鳴高圓印章前一手的故事？？2013-08-12深夜下毒暗殺我剛好是鬼月七夕情人節欸！！！編劇們沒問看準不準？？

Stupid question until matter transporter technology comes online we’re stuck with flying

The BBC gaslighting their viewers as usual. How about telling people that shoplifting is up a whopping 91% in London and knife crime up 54% under Khan, who then has the audacity to say everythings fine. Report real news.

Hydrogen combustion?

wow

The BBC should stop sending thousands of journalists and their crews to the far flung corners of the globe for a picture of a Panda. They themselves must be largely responsible for the state of the planet, them and that Attenborough geezer.

In india Pulwama attack FBI investigation is necessary through the UNO please to give justice to the brave and innocent soldiers in india

Anything that is artifical is inevatibly unsustainable and coincidently causes waste that is not bio-degradible.

OT: Benny Hill considered funnier than Monty Python by two TV stations --WOR and WLVI!

I think I have a much better answer. Let me explain: 1. Back in the 1960's and early 70's Thorium molten salt nuclear reactors were explored in the USA by the same guy who invented the light water reactor. This was his 'real' reactor while he considered light water an easy to accomplish "proof of concept". He never meant for light water to be what we actually used. However, politics got in the way of him realizing his dream. Now countries like China are building demonstration Thorium molten salt reactors and even India, with the largest Thorium reserves in the world are looking into a form of Thorium reactors. There is also a big push in this arena for mass produced in factories small modular reactors that can be shipped pre-built and installed on site. You can go anywhere from one small reactor to a large array and do it cheaply. Especially with Thorium molten salt reactors, these are inherently safe reactors that can produce a lot of power in a compact space. They are also very efficient, using 1/35th the fuel of a light water reactor for a given amount of energy production. The main fuel is plentiful enough to power all of civilization for billions of years. I could go on and on, but overall these are worlds apart and orders of magnitude better in every way that counts than the traditional light water reactor. You build a bunch of these reactors, rolling them off of the assembly line in high volume and get your fuel reprocessing and such in order and you have cheap, round the clock, abundant power that can be placed anywhere you need it. Just say you need at least 250 MW of power somewhere and you have it. Even if you need say 20 GWs of power, just install a bunch of them at a facility and monitor from a central control room. 2. Now that you have the cheap and abundant power, it turns out we can do more with electricity than just make hydrogen, we can make methane (natural gas). Making methane, we can pull CO2 out of the atmosphere or out of any number of places we have CO2 spewing out of in high concentrations now. So when you burn the methane later, you just put what you effectively took out of the atmosphere and put it back in a circular cycle. We use massive amounts of methane today, so this is a very good thing to be able to produce. 3. Now that you can make methane on the cheap with these nuclear reactors in #1, it turns out we can make propane out of methane. We use propane everywhere already. Want to BBQ outside? Look no further than that propane fueled BBQ you have on your back porch or patio. Go to a nice restaurant with outdoor seating? Well that heater keeping you warm is propane powered. Want to drive a forklift around inside and around a warehouse? Well that forklift is probably propane powered. Even say getting a backup generator for your home and / or camping / RV / trailer, it turns out it is super easy to modify a gasoline engine to run on propane, so they just sell dual fuel generators everywhere. 4. Now here is the thing, propane gravimetrically is more energy dense than jet fuel. This is as in 43 MJ/kg for jet fuel versus 50 MJ/kg for propane. It is also more voluminous, but it is easy enough to compress it into a liquid and store in a reasonably compact and light tank for aircraft use. Maybe for an existing large long haul airliner, you use some of that attic space above the passengers for your propane tanks instead of using the center fuel tank. It is easy enough to retrofit the plane to have the engines burn propane. So maybe you make existing planes dual fuel where it does a combination of jet fuel and SAF in the wing tanks and propane in the fuselage in attic tanks. A future plane may have struts and focus more on larger tanks in the fuselage for all of its fuel. 5. Moving on to shipping, which is another major emitter, you throw a 250 MW reactor into a giant ship, that ship can speed over the oceans and deliver lots of cargo a lot faster than other ships. The ship just runs off of the nuclear reactor directly. Hot salt makes steam, and steam runs steam turbines which turn the main propeller. Job done. You could also have a gas turbine turning a generator for main ship power. As for safety, the main problems safety wise are in and around the Middle East, so you just rapidly sail around Africa and don't think twice about it because these ships are so fast.

Global aviation accounts for 2-5-4% global gases emissions. Animal agriculture contributes to more than 15%. The emissions themselves (from planes) are not the problem. The altitude they travel in is however. If governments didn't heavily divest in train infrastructure we wouldn't be in this big of a mess. Also, China and India...why should the rest of the world care, when these two alone make all the (negative) difference with no care whatsoever.

Back to the Hindenburg technology again - Oh wait didn’t it blow up?

Oh my god, who is she Flying a plane Across the sea

When things become sustainable, activists may find themselves without a job. Therefore, the short answer is NO.

Here we go, the push for limiting us to fly anywhere, and place us in 15 min cities.

🤔Will flying ever be sustainable? Uhm, yeah, #Birds do it all the time. 🤨

…still produces h2o the most potent (sticky) greenhouse✈️

the real question is will making babies ever be sustainable. the answer is no, so who cares about other less significant ideas

In india in karnataka state Jails and prisons No intimation to incoming and out going inmates to their Families and No postal service No phone and No case details and supari murders and Rape committed on women prisoners and Drugs dealing violates the article 21of the constitution of india FBI investigation is necessary through the UNO please protect the peoples in karnataka state

The answer is short: No.

It has been sustainable and profitable for many, many years. Has it been slowly poisoning the air and ground? Yup.

Flying is amazing - stop trying to make people feel guilty for living their lives.

It is already sustainable.

It is sustainable now, otherwise planes would crash, seriously 🙄🙄🙄 🇬🇧🇺🇦🌈🙏

there is one potential solution your absolutely right 🪓

The English 🏴󠁧󠁢󠁥󠁮󠁧󠁿 White man 👨🏻 should always be given 1st 🥇 class seats 💺

Nope because you are using tons of resources to build em and they CANT BE REBUILT.

No, end all flying everywhere. I’m a climate change activist.

This is false video ! . Not new fuels. Would you trust boeing with this energy? Oh thanks for you tube deleting my msgs !

🪓 I find that if you have one of these things get done

UAPs, Tik tacs, Suaucers….camon guys🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸🛸💪🏾👽‼️👽🌌 GET REAL

🪓 do you know what that is