Conventional batteries take so long to charge that they cannot efficiently store braking energy. Graphene supercapacitors store almost as much but charge in just 16 seconds.
The energy-efficient power networks of the future will require entirely new ways of forecasting demand on the scale of individual households. That won’t be easy.
Stanford researchers develop a copper catalyst that can efficiently convert carbon monoxide and water to ethanol.
Samsung’s Galaxy S5 is the first smartphone that can use a fingerprint to authorize payments in stores and online.
The world’s first electrostatically driven graphene speaker matches or outperforms commercially available earphones, say physicists.
Techniques developed at MIT and Pacific Northwest National Lab could make it more affordable to burn fossil fuels without releasing carbon dioxide to the atmosphere.
It’s possible—though not always foolproof—to get embarrassing things taken down. Voluntary data-labeling standards could make it even easier.
Earth’s biggest cities are visible from space at night thanks to street lighting. ET’s probably are too, say astronomers
The friendship paradox is the empirical observation that your friends have more friends than you do. Now network scientists say your friends are probably wealthier and happier, too.
The production tax credit doesn’t promote radical innovation, but maybe that’s okay.