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New technologies promise biofuel 'plan B'

Earth

New technologies promise biofuel 'plan B'

Biofuels have failed to live up to their early environmental promise, but fuels made from plant waste and weeds may turn this around

News

Have we underestimated total oil reserves?

Earth

Have we underestimated total oil reserves?

News

US considers nuclear-powered assault ships

Technology

US considers nuclear-powered assault ships

News

Earth

Algae oil promises truly green fuel

News

The greening of Silicon Valley

Earth

The greening of Silicon Valley

Features

Exotic nitrogen could offer safe rocket fuel

Technology

Exotic nitrogen could offer safe rocket fuel

News

Interview: Bring on the solar revolution

Earth

Interview: Bring on the solar revolution

Opinion

'Self-digesting' biofuel plants could ease food crisis

Earth

'Self-digesting' biofuel plants could ease food crisis

News

To make the most of wind power, go fly a kite

Earth

To make the most of wind power, go fly a kite

Features

When burning gas is good for the planet

Earth

When burning gas is good for the planet

Rural families are slashing their energy costs, improving indoor air quality and helping preserve local forests by using biogas plants

News

Earth

Fuel prices hit US drivers where it hurts

News

Earth

Women farmers face eviction in biofuels boom

News

Earth

'Flammable ice' could be mined for fuel

News

Earth

Harnessing river whirlpools puts energy on tap

News