Global warming is driving increased calving of the Greenland glaciers, causing icebergs the size of Central Park to crash into the sea. But low tides might be contributing to the calving crisis and helping to trigger huge earthquakes created by the massive icebergs, according to seismologist Meredith Nettles. Nettles…
ICE AGE PUZZLES IN CHILE HIDE MYSTERIES FOR WARMING WORLD
Climate trends in the Northern and Southern hemispheres often seem out of sync, and scientists say that solving the mystery is a must to better understand what to expect in a warming world. Enter George Denton, a veteran researcher on the shifts between the glacial and interglacial cycles – the ice ages…
SOIL ‘GIVES A KICK’ TO CLIMATE CHANGE
Yes, humans are releasing huge amounts of carbon dioxide into the atmosphere by burning fossil fuels. But we might be boosting the emissions from an unexpected place: the earth beneath our feet. Antarctic warming periods in the ancient past shows that soils may have amplified rises in temperature that occurred thousands of years ago…
CLIMATE SCIENTISTS CAPTURE THE PAST TO FORECAST FUTURE CHANGE
You might want to think of climate researchers as arson investigators. That’s the comparison made by Penn State climate scientist Richard Alley at the Comer Abrupt Climate Change Conference this fall in southwestern Wisconsin…
TIME MACHINE: OLDEST ICE CORES NOW TAKE US BACK A MILLION YEARS
Take a deep breath – and pretend it’s 800,000 years ago. That ancient air you are breathing is pretty much the same as the stuff you’re inhaling at this moment. Except there’s a lot less carbon dioxide in it. We know because we’ve recovered that ancient air…
ANCIENT SHORELINES MAP LAKE LEVELS TO HELP PREDICT FUTURE DROUGHTS
Ancient shorelines in the Great Basin of the western United States reveal clues to severe ancient droughts and that could help us better predict climate change for the future. Scientists in the U.S. and elsewhere across the globe are trying to use lake clues signifying wet and dry periods over thousands of years in order to tie these periods to past climate changes…
CLIMATE CHANGE MAY BE STALLING OVERDUE ICE AGE
Despite warming temperatures worldwide, scientists are exploring Earth’s ancient cold snaps. Researching how past ice ages ended can reveal clues about our planet’s future. Some of the evidence suggests that we might be overdue for an ice age, in fact, according to glaciologist Brenda Hall of the University of Maine…
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