Humans emit two tons of CO2 a year - through eating

You can turn down the heating; you can switch to a hybrid car. But unless you can stop, um, we'd better call it excreting, your efforts won't go a long way towards cutting your carbon emissions.

Shortage of alternative energy minerals will trigger trade wars

The trend towards alternative energy sources will trigger international trade wars, a Colorado Geological Survey scientist will tomorrow warn the Geological Society of America.

One fifth of animals could be set for extinction

One in five vertebrate species could be set for extinction, says an international group of scientists.

World's biggest solar power project approved

The US Department of the Interior has approved the world's largest solar energy project.

Technique promises indefinitely storable solar energy

MIT scientists are developing an alternative to photovoltaic and solar-thermal systems for capturing the sun's energy.

Arctic warming heralds colder US winters, warns NOAA

The Arctic is contuing to warm at an unprecented rate - and the changes are likely to be permanent, says the National Oceanic and Atmospheric Administration (NOAA).

GE taps jet engine cooling technology in LED bulbs

GE scientists and researchers at the University of Maryland have designed a prototype 1,500-lumen LED bulb that taps jet engine cooling technology to prevent overheating.

Biodiversity isn't priceless at all, says UN

Presumably recognising that most people are motivated more by money than by beauty, a UN report has attempted to put a price on biodiversity. 

Cars worse than planes for global temperatures

Driving a car helps hike global temperatures in the long run more than making the same long-distance journey by air, the American Chemical Society says.

GE touts hybrid Halogen-CFL light bulb

GE has introduced an incandescent-shaped light bulb that combines the instant brightness of halogen technology with the energy efficiency of a compact fluorescent (CFL) bulb.

US to face severe droughts, study finds

The US may be set for severe and prolonged droughts in the coming decades, a new government study has found.

Asia's corals in massive die-back

The worst coral die-off in ten years - possibly ever - has struck across the Southeast Asian and Indian Oceans.

Americans hazy on climate change, says report

Most Americans have a very poor understanding of climate change, according to Yale University researchers, who grade 52 percent as deserving an 'F' on the subject.

Google invests in offshore wind project

Google's invested in a project to build a 350-mile power transmission backbone along the US East Coast.

Slowing population growth could have big effect on emissions

A new study from the National Center for Atmospheric Research and other bodies aims to quantify the effects of population growth on carbon dioxide emissions, and concludes that it could make a big difference.

Discovery paves way for cheap plastic solar cells

A new discovery at Rutgers University looks likely to lead to the creation of efficient and inexpensive solar cells made of plastic.

Sun's role in warming Earth may be overestimated

It's completely counter-intuitive, but it now seems that increased solar activity actually leads to cooling on Earth.

Copenhagen climate accord won't do the job, say scientists

The Copenhagen Accord is so full of holes that even if countries stick to their targets there could still be a 4.2-degree rise in temperature by 2100, says a new report.

'Artificial leaves' produce electricity

A North Carolina State University-led team has created 'artificial leaves – water-gel-based solar devices which can act like solar cells to generate electricity.

Clean stoves could save millions in developing world

It's not as obvious as the pollution that's caused by industrialization, but smoke and toxins from cooking fires are killing millions of women worldwide.