Transportation

Biggest aircraft since the Hindenburg cleared for test flights
Pathfinder-1, a massive airship developed by Google cofounder Sergey Brin’s LTA Research, has begun flight testing.
Green shipping picks up speed
The shipping industry aims to get to net-zero emissions by 2050. Can novel fuels, wind power and coordination on a global scale get it there?
Waze will now tell you if a road has a history of car accidents
Navigation app Waze’s new Crash History Alerts let drivers know when they’re approaching an area prone to car accidents.
This amphibious electric tricycle (and camper) costs $14,600 
The technology we (or aliens) need for long-distance interstellar travel
Stanford engineers warn that electric car charging could crash a grid powered by renewable energy 
Walking to school is more likely to keep kids active as they age
Electric planes are coming: Short-hop regional flights could be running on batteries in a few years
Paradox-free time travel is “logically” possible, say physicists
“Up to 2.4 million new apartments” legalized by bipartisan California legislation
Air Canada orders 30 electric-hybrid aircraft for takeoff in 2028