Sustainability

Ocean salinity shows water cycle is accelerating

Pollution in thunderclouds increases global warming

Video: Google's self-driving car goes to DC

Porsche revs 918 Spyder prototype for testing

Team predicts future regional temperatures for North America

Honda's UNI-CUB: Segway or Wall-E's girlfriend?

Claim: Tesla Model S offers 320 miles on a single charge

Antarctic ice shelf at tipping point

Brammo revs electric Empulse motorcycle

Toyota showcases RAV4 EV with Tesla powertrain