Extra-light, flexible solar cell could keep your smartwatch powered
You might not need batteries in some wearable devices.
New York power plant mines Bitcoin using excess energy
It might only work for energy sources like natural gas, however.
AI can help find more places to store captured CO2 underground
The tech maps underground structures using 'hidden' earthquake vibrations.
The rise of cloud computing has had a smaller climate impact than feared
Computing output jumped 6 times while power consumption rose only 6 percent.
Alphabet quits work on its energy-generating kites
Makani's work might live on, but not under Alphabet's umbrella.
Rain may soon be an effective source of renewable energy
A generator can briefly light up 100 LED bulbs with a single drop.
Tesla unveils its easier-to-install Solar Roof
If you need a new roof, Tesla wants you to use their new tiles.
Tesla may open 'Centers' to get around pro-dealership laws
They could help the EV maker deliver more cars -- if it survives scrutiny.
IKEA will produce more energy than it consumes by 2020
It hopes to be 'climate positive' by 2030.