Melting glaciers.

[Peikko 1,575]

A composite image showing South Cascade glacier in Washington state (year 2000, left, 2006, right). A new study today found a sharp rise in the melt rate of three key American glaciers over the last 10-15 years. Photograph: USGS

Climate change is melting America's glaciers at the fastest rate in recorded history, exposing the country to higher risks of drought and rising sea levels, a US government study of glaciers said today.

The long-running study of three "benchmark" glaciers in Alaska and Washington state by the US geological survey (USGS) indicated a sharp rise in the melt rate over the last 10 or 15 years.

Scientists see the three - Wolverine and Gulkana in Alaska and South Cascade in Washington - as representative of thousands of other glaciers in North America.

"The observations show that the melt rate has definitely increased over the past 10 or 15 years," said Ed Josberger, a USGS scientist. "This certainly is a very strong indicator that climate change is occurring and its effects on glaciers are virtually worldwide."

The survey also found that all three glaciers had begun melting at the same higher rate - although they are in different climate regimes and some 1,500 miles apart.

For South Cascade, the average surface loss rate grew to 1.75 to 2m a year from about 1m a year.

USGS researchers have been measuring the three glaciers for more than 50 years, drawing on photographs and a network of stakes driven into the glaciers to gauge the accumulation of snow during winter, and the resulting melt each spring. It is the oldest such record of glacier activity.

In a sign of the Obama administration's focus on climate change, this year's survey was promoted by the interior secretary, Ken Salazar, who called it an important contribution to dealing with climate change. "This information is helpful in tackling the effects of climate change and it is exactly the kind of science we need to invest in to measure and mitigate the dangers impacts of climate change," he said.

Shrinking glaciers have led to a reduction in spring run-off which is intensifying the effects of drought in California and other states, especially later in the summer when other water sources dry up.

Glacier loss has also contributed to rising sea levels, which has put low-lying coastal areas - such as New Orleans - at greater risk of storm surges.

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[w¡n9Nµ7 §£@¥€r 123]

If what comes out of all this are snow-free winters in Jersey, I can live with it. Even if the new "jersey shore" ends up in Sayreville.

[Peikko 1,575]

Glacies, oh no! I can't spell

[Pinocchio Liberal 268]

Climate change? always has been always will be. 10000 years ago there was no glacier at all! Who the #### cares about how much ice there is? my freezer has more today than yesterday.

[Peikko 1,575]

Bloody fruit flies, they're everywhere!

[Pinocchio Liberal 268]

Bloody fruit flies, they're everywhere!

Tell me, do you really see a hundred of me? Oh one other thing, why do your type like to land on turds so much? Insight?

[Kathryn41 3,205]

Glacies, oh no! I can't spell

Now you can:-), although 'glacies' could be a cute pet name for them, I suppose .

[Peikko 1,575]

Thank you.

[Teacher Mark 53]

This came as an eye opener for me:

Regarding Nha Trang, Vietnam

However, if high tides keep rising as expected another meter in next 20 years (as a consequence of world climate changes), much of Nha Trang could disappear since the city is ringed by mountains leaving little soil left above high tide.

[HAL 9000 96]

A glacier's melt rate addresses something a little bit more long term than mere weather instances. Just thought I'd point that out.