Limiting global warming now can preserve valuable freshwater

Snowcapped mountains not only look majestic, they're also vital to a delicate ecosystem that has existed for tens of thousands of years. Mountain water runoff and snowmelt flows down to streams, rivers, lakes, and oceans—and ...

How old is the oldest ice in Antarctica?

Antarctica is so cold that snowfall builds up year after year, resulting in frozen blankets of ice more than 3 km thick in places. You might think that to find the oldest ice, one simply has to dig ever deeper, to find samples ...

How old is California's Yosemite Valley?

First-time visitors to Yosemite Valley gape in awe at the sheer granite wall of El Capitan and the neatly sliced face of Half Dome, aware, perhaps vaguely, that rain and glaciers must have taken a long time to cut and sculpt ...

Six people killed in Philippine typhoon

The strongest typhoon to hit the Philippines this year left at least six people dead, authorities said Monday, after heavy rain and fierce winds battered the country's most populous island.

Competition limits the ranges of mountain birds

A new study helps reveal why tropical mountain birds occupy such narrow elevation ranges, a mystery that has puzzled scientists for centuries. While many assumed temperature was responsible for these limited distributions, ...

Tracking ancient earthquakes by taking the temperatures of faults

Understanding ancient earthquakes helps researchers estimate the hazards posed by modern earthquakes. Reported in a new study, geologists have come up with a new way to estimate intensity of these old events: take their temperature.

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