Rolls-Royce tests its first hydrogen-powered plane engine
Rolls-Royce and easyJet have demonstrated for the first time that a modern plane engine can be safely powered by hydrogen fuel.
This amphibious electric tricycle (and camper) costs $14,600
Latvian startup BeTRITON’s amphibious electric tricycle will take you from the road to the water to the campsite.
The technology we (or aliens) need for long-distance interstellar travel
Interstellar distances are vast, and extremely advanced technology will be required if we (or aliens) want to visit other star systems.
Stanford engineers warn that electric car charging could crash a grid powered by renewable energy
Most electric car charging is done at night. A grid powered mostly by renewable energy might not be able to meet demand.
Walking to school is more likely to keep kids active as they age
Children who walk or bike to school at a young age are more likely to continue the habit as they age, a new study shows.
Electric planes are coming: Short-hop regional flights could be running on batteries in a few years
Aerospace engineer Gökçin Çınar discusses sustainable aviation concepts, including hybrid-electric planes and hydrogen fuel alternatives.
Paradox-free time travel is “logically” possible, say physicists
An undergraduate and his supervisor ran the numbers and found paradox-free time travel to be mathematically consistent.
“Up to 2.4 million new apartments” legalized by bipartisan California legislation
Millions of new apartments in commercial areas and near transit have been legalized by new California laws just signed by Governor Gavin Newsom.