Tropical ecosystems boost carbon dioxide as temperatures rise

NASA scientists and an international team of researchers have found tropical ecosystems can generate significant carbon dioxide when temperatures rise, unlike ecosystems in other parts of the world.

Cities affect temperature a thousand miles away

Large cities can affect the weather as far as 1,000 miles away, say scientists, warming some areas and cooling others.

2012 was US's hottest year on record

Last year was the ninth warmest since 1880, say NASA scientists, and the warmest recorded by far for the continental US.

2012 was US's hottest year on record

Last year was the warmest on record for the contiguous United States, say NOAA scientists, with an average temperature of 55.3°F - 3.2°F above the 20th century average, and 1.0°F above 1998, the previous warmest year.

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.

Team predicts future regional temperatures for North America

The first detailed predictions of future temperatures across North America have been produced, using a combination of climate models and some complicated statistics.

Earth's clouds are getting lower

The sky is falling - but it may be good news for the planet. New Zealand scientists say that the Earth's clouds are getting lower, in a mechanism that could help to counter global warming.

Future temperatures could be too hot to survive

Huge swathes of the world could become too hot for human beings to survive, if current worst-case scientific projections of global warming turn out to be true.