Tag Archives: pollution

Why Did the Maya Abandon the Ancient City of Tikal?

In the ninth century A.D., the Maya abandoned the great city of Tikal after hundreds of years of prosperity and expansion. Researchers have long sought to explain how and why the city collapsed, but despite extensive study of the site, unanswered questions remain. Continue reading Why Did the Maya Abandon the Ancient City of Tikal?

Mercedes-Benz Owner Daimler AG May Have Rigged Emissions Tests

Daimler AG, the automaker which produces the Mercedes-Benz line of luxury vehicles, is facing growing scrutiny after US investigators reportedly found that it installed software to cheat diesel emissions tests on cars, Bloomberg and Reuters reported.

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Sperm Counts Have Plummeted Among Western Men, Scientists Confirm

Something weird is going on with human sperm production. For decades, scientists have warned that sperm counts are dropping among Western men, but no one has really been able to prove it. In what is now the largest and most comprehensive study of its kind, scientists have presented compelling evidence in support of this rather alarming assertion, showing that sperm counts have dropped more than 50 percent in just four decades.

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