Earth
US food waste worth more than offshore drilling
A study of the energetic value of food wasted in the US each year shows the scale of the problem
News
Earth
Green machine: A salty solution for power generation
News
Technology
Alternative nuclear fuel is surprisingly reactive
News
Earth
Green machine: A new push for pond scum power
News
Earth
Stabilisers will let deep-sea wind turbines stand tall
News
Earth
Hot electrons could double solar cell efficiency
News
Physics
Mystery glitch? Blame it on the sun
News
Environment
Green machine: Bacteria will keep CO2 safely buried
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Earth
Second well on the way to cap Deepwater Horizon
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Earth
Green machine: Recycled batteries boost electric cars
Green machine is our weekly column on the latest advances in environmental technologies
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Earth
Wonderfuel: Welcome to the age of unconventional gas
Features
Earth
Green machine: Cars could run on sunlight and CO2
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Earth
Sailing ships could harvest fuel from the oceans
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Earth
Biofuels learn to eat less
News