About 5% of human-caused climate change can be traced back to air travel.

Steinfeld is co-author of a paper on the system published in theJuly 20 issue of the journal Joule.

It’s tough to find clean alternatives for many long commercial flights.

“We can produce synthetic kerosene from water and CO2 instead of deriving it from fossil fuels.

That concentrated heat and radiation drives cycles of chemical reactions with the reusable compound cerium oxide inside the reactor.

It’s then converted from a gas to liquid fuels like kerosene or diesel.