Fully autonomous weapons should be outlawed before they are developed, says a human-rights scholar.
The prospects for carbon-neutral vehicles could get a boost from a new way to make hydrogen from biomass.
And there’s a 50:50 chance of a Three Mile Island-scale disaster in the next 10 years, according to the largest statistical analysis of nuclear accidents ever undertaken.
In a first-of-its-kind endeavor, electricity-starved Rwanda and the Democratic Republic of Congo are trying to get power from a lake—and avert catastrophe.
The world’s largest and cheapest reverse-osmosis desalination plant is up and running in Israel.
Physicists have overlooked an obvious place to search for shell-like structures constructed around stars by advanced civilizations to capture their energy.
Relativistic spacecraft must interact with the cosmic microwave background in a way that produces a unique light signature. And that means we should be able to spot any nearby, according to a new analysis.
A system that keeps data on corporate computers and mobile devices encrypted until it is viewed may help prevent breaches.