Taxonomy term

climate change

AGU: How scientists should talk climate change

Blogging on EARTH

SAN FRANCISCO — The Intergovernmental Panel on Climate Change's Fourth Assessment report last year showed a strong consensus among scientists that the climate is warming, thanks largely to anthropogenic greenhouse gases. So one has to wonder why scientists are still struggling to get that message through to both policymakers and stakeholders.

17 Dec 2008

AGU: Climate science report questions likelihood of abrupt climate change

SAN FRANCISCO — A new U.S. Climate Change Science Program report states that abrupt climate change is unlikely to happen over the next century, scientists announced Tuesday at the annual meeting of the American Geophysical Union. However, the longer-term impacts of climate change could still be severe.

16 Dec 2008

Montreal Protocol affects more than just ozone

In 1987, nearly 200 nations signed the Montreal Protocol to restrict the use of ozone-depleting chemicals. The international treaty helped keep the ozone hole over Antarctica from growing further, preventing an increase in harmful radiation reaching Earth’s surface. Twenty years later, new research suggests that the treaty helped the planet dodge more than one bullet: The Montreal Protocol also prevented significant regional climate change.

13 Nov 2008

Maldives' residents looking for a new patch of land

Blogging on EARTH

The highest land point in the Maldives, a tiny island nation in the Indian Ocean, is only about 2.4 meters above sea level. With the IPCC predicting a sea level rise of 20 to 58 centimeters by the year 2100, the Maldives' 300,000 residents are therefore among the most threatened in the world by climate change.

11 Nov 2008

Arctic soils retain more carbon

Don’t look now, but a slumbering beast rests in the north. It’s not news that the North American Arctic, where trees dare not grow, contains immense amounts of organic carbon in its soils. But according to a new study, past estimates of organic carbon concentrations in Arctic soils are too low — and that has some scientists worried about vast amounts of carbon being released as temperatures warm.

15 Oct 2008

Swapping one greenhouse gas for another

There are no miracle cures, it would seem. Nitrogen trifluoride is a colorless, nontoxic gas that has helped make the semiconductor industry greener by replacing a well-known greenhouse gas threat. But nitrogen trifluoride is a powerful greenhouse gas in its own right, with a potential impact on climate 17,000 times greater than carbon dioxide — and it is currently unregulated.

28 Aug 2008

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