World's largest tidal power turbine unveiled in Scotland.

World's largest tent opens in Kazakhstan.

26-hour flight confirms viability of emissions-free air travel.

Former Formula One engineer unveils superlight eco car.

The New York Times reports.

U.S. Supreme Court decision clears path for genetically modified alfalfa.

The switch to efficient lighting will have a significant impact on emissions – and climate change.

But do the functional benefits meet the aesthetic aims?

New nanotechnology research means your pants may one day power your iPod.

Largest solar-powered boat in the world to attempt historic voyage.