Claim: Global warming caused by CFCs, not carbon dioxide

Chlorofluorocarbons (CFCs) are to blame for global warming since the 1970s and not carbon dioxide, claims new research from the University of Waterloo recently published in the International Journal of Modern Physics B.

The tropical upper atmosphere "fingerprint" of global warming

In the tropics at heights more than 10 miles above the surface, the prevailing winds alternate between strong easterlies and strong westerlies roughly every other year.

NASA: Global warming increases the risk of extreme weather

A NASA-led modeling study provides new evidence that global warming may increase the risk for extreme rainfall and drought.

'Winnipeg moves to Minneapolis' as northern US warms

Northern latitudes are greening up, says a NASA-funded study, increasingly resembling the lusher latitudes of the south.

Global temperatures now highest for thousands of years

The Earth's only been this warm for about a quarter of the time over the last 11,300 years, a new reconstruction of the planet's temperature history shows.

Global warming turned Sandy into superstorm

Last October's Superstorm Sandy was made far worse by the melting of Arctic sea ice, new research suggests.

Volcanoes, not pollutants, damp down global warming

Global warming over the last ten years or so would have been more extreme if it weren't for volcanoes, says a team from the University of Colorado, Boulder.

'Frozen' atmospheric waves trigger extreme weather events

Another report has linked man-made climate change with extreme weather events around the world, including recent heat waves in the United States and Russia and the unprecedented Pakistan flood.

Melting Siberian permafrost threatens major methane release

It could take as little as a 1.5 degree rise in global temperature to thaw Siberia permanently, potentially releasing catastrophic levels of cartbon dioxide and methane from the soil.

How mutants save a species

There's one obvious reason why it's easier for a species to survive a gradual environmental change than a sudden one: more individuals stay alive when change is gradual or moderate, meaning there are more chances for a winning mutation to emerge.

Global warming brings severe rainstorms

Extreme rainfall events are becoming more and more commmon across the globe as climate change brings higher temperatures, researchers say.

Has global warming slowed right down?

Global warming could be a lot less extreme than feared, according to a new study which finds that worldwide temperatures have levelled off.

Ancient ice cores give clues to effects of global warming

A new study indicates that the last interglacial period may give us a picture of where the planet is headed now, as greenhouse gases increase and temperatures rise.

Andean glaciers shrink by half

Glaciers in the Andes are retreating faster than ever, say researchers, with global warming causing them to shrink by as much as half since the 1970s.

World set for many more record-breaking heat waves

Long-term global warming has brought the world five times as many record-breaking hot months worldwide - ten times as many in parts of Europe, Africa and southern Asia. And it's only going to get worse.

Amazon trees could survive global warming

Some good news, for a change: a new genetic analysis indicates that many Amazon tree species are likely to survive global warming in the coming century, contrary to previous findings.

1990 climate change predictions turn out to be accurate

In a blow to those people who believe that global warming predictions are just a lot of hot air, an international team has established that predictions made 20 years ago are turning out pretty accurate.

CO2 emissions reach record high

Many governments are still failing miserably to keep global carbon emissions low enough to limit global warming to the two-degree-Centigrade international target.

Is CO2 protecting us from an ice age?

Far from dooming us to runaway global warming, manmade carbon emissions may be saving us from an ice age fueled by carbon sequestration in peatland.

Thawing permafrost could lead to massive carbon release

As much as 44 billion tons of nitrogen and 850 billion tons of carbon stored in arctic permafrost could be released into the environment over the next century by the effects of global warming.