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energy efficiency

Even greener alternative: Energy from algae

Earth

Even greener alternative: Energy from algae

Oil is running out, but biofuels guru Jonathan Trent says algae is an alternative that can produce oil while cleaning wastewater – and feeding us too

Opinion

Can cold fusion research survive pioneer's death?

Technology

Can cold fusion research survive pioneer's death?

Opinion

Record haul of uranium harvested from seawater

Earth

Record haul of uranium harvested from seawater

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Lowest US carbon emissions won't slow climate change

Earth

Lowest US carbon emissions won't slow climate change

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We're still on the slippery slope to peak oil

Earth

We're still on the slippery slope to peak oil

Comment

Space fuel crisis: NASA confronts the plutonium pinch

Space

Space fuel crisis: NASA confronts the plutonium pinch

Features

Japan could become second biggest solar power nation

Earth

Japan could become second biggest solar power nation

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Nuclear fuel rods removed from Japan's Fukushima plant

Earth

Nuclear fuel rods removed from Japan's Fukushima plant

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Fukushima increases risk of cancer – but not by much

Health

Fukushima increases risk of cancer – but not by much

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Can fracking contaminate drinking water?

Earth

Can fracking contaminate drinking water?

The salt of the Earth may hint at trouble for the fracking industry's safety claims

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Technology

Graffiti battery lets you spray paint power supply

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Earth

Japan prepares to switch nuclear reactors back on

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Earth

Renewable energy's growing pains

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Earth

Japan to renege on carbon emissions cuts

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