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Now theres a global race to get clean aviation off the ground. And some Companies Think theyre close to cracking it. Pretty soon, passengers will be flying in zero emission aircraft. But how did we get here . Archive The New Machine is called, optimistically, the flyer. Weve come a long way since the Wright Brothers first flight in 1903. That day, they lifted the world into a new dimension. Then we achieved bigger, faster planes. Great, but thats also how we ended up with all these emissions. Jet engines burn kerosene, which releases carbon dioxide, one of the main Greenhouse Gases causing cli...

In the original frame, we would be able to fly about 19 passengers. It looks like a lot of kit in there. How would you fit in 19 people . Yeah, so in the retrofitted configuration, it will be about a dozen people. Daniela is one of the engineers working on the engine. Actually, the fuel cells are this one. The power is created in these small layers. So you have to build up your layers to create the power to take off an aircraft. This engine could almost provide enough power to get you from london to glasgow, but not quite. If you wanted to scale it up for international flights, would you just ...

hello, i'm christian fraser. you're watching the context on bbc news. a court of appeals decides donald trump wil not be given presidential immunity for his role in the january 6th capitol riots, and must face a civil lawsuit. welcome back. at the cop climate summit in dubai today, the brazilian president, lula da silva, addressed the elephant in the room. "we have a collective problem," he said, "a lack of ambition," "our current targets," he added, "don't go anywhere near far enough." the evidence suggests he is right. today, the world meteorological organisation told us, with a mo...

step counter, the sport matt and wireless remote call. >> now celebrate, go forth in america thursday, july 4. it's 170 and see it in welcomed all you watching us here in the united states, canada, and all around the world. i'm kim brunhuber. this is cnn newsroom. both us presidential candidates are back on the campaign trail after thursday's this is the cnn debate bots. all eyes were on joe biden's questions swirl around his ability to stay in the race light of that debate. many in your ukraine are now wondering what's in store for them in the war with russia will speak to ukrainian...

about 100,000 flights jet around the world every day. flying accounts for 2.5% of all carbon emissions. now, that might not sound like much, but if aviation was a country, it would be among the top ten most polluting nations in the world, and its impact is expected to rise. now there's a global race to get clean aviation off the ground. and some companies think they're close to cracking it. pretty soon, passengers will be flying in zero—emission aircraft. but how did we get here? archive: the new machine is called, optimistically, - the flyer. we've come a long way since the wright...