Flying may be the quickest way to travel long distances, but it also releases a lot of carbon dioxide (CO2) and other harmful emissions into the air. This worsens global warming and the problems wrought by climate change. Concern about air travel’s carbon footprint has led some environmental advocates to ditch flying altogether. But is this the only solution? Researchers are exploring ways to create a greener future for aviation.
First Steps
On January 19, 2023, a small, 19-seat twin-engine aircraft took to the skies. It completed a 10-mile (16-km) loop before returning to Cotswold Airport in the United Kingdom. This aircraft is the world’s largest to complete a flight powered by hydrogen fuel—a clean energy source with zero carbon emissions.
Under its left wing, two fuel cells work in harmony. Fuel cells act a bit like
