Climate change warning from collapsed ancient cities

Why did some ancient Khmer and Mesoamerican cities collapse between 900-1500CE while their rural surrounds continued to prosper? Intentional adaptation to climate changed conditions may be the answer, suggests a new study, ...

Corn belt farmland has lost a third of its carbon-rich soil

More than one-third of the Corn Belt in the Midwest—nearly 100 million acres—has completely lost its carbon-rich topsoil, according to University of Massachusetts Amherst research that indicates the U.S. Department of ...

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