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Des excréments de chauves-souris témoins de plus de quatre mille ans d histoire
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Science | L histoire selon les excréments de chauves-souris
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Warming Trends: Google Earth Shows Climate Change in Action, a History of the World Through Bat Guano and Bike Riding With Monarchs
A column highlighting climate-related studies, innovations, books, cultural events and other developments from the global warming frontier.
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An updated Google Earth feature shows climate change in action over the last four decades.
Launched in collaboration with U.S. and European government agencies, Google Earth Timelapse contains 37 years worth of changes to Earth’s surface, many related to the climate crisis.
In the Amazon, for example, the tool shows large swaths of forest traded for cattle ranches and soybean farms. In Greenland and Antarctica, users can see miles-long glaciers quickly melting away. Wildfire smoke fills the skies above Alberta, Canada; the coast of the Bahamas is devastated by a hurricane; and the Aral Sea in Kazakhstan loses 90 percent of its surface area in a matter of decades.
4,300 Years of Bat Poop From The Depths of a Jamaican Cave Have Revealed Earth s Past
14 APRIL 2021
You may not give a pile of bat poop gathered over 4,300 years a second look – but to a group of scientists, it s provided an intriguing insight into how bat diets and therefore climate conditions have shifted over thousands of years.
Taller than the average man (2 meters or 6-and-a-half feet), the pile of poop (also known as guano) records history in clear layers, much like sediments under a lake.
By analyzing the layers back through time, the scientists have been able to figure out changes in the diets of the bats that have been inhabiting this cave for millennia.
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