Scientists decipher 3 billion-year-old genomic fossils

About 580 million years ago, life on Earth began a rapid period of change called the Cambrian Explosion, a period defined by the birth of new life forms over many millions of years that ultimately helped bring about the modern diversity of ani…

Tropical forests slashed for farmland

Global agricultural expansion cut a wide swath through tropical forests during the 1980s and 1990s. Over half a million square miles of new farmland — an area roughly the size of Alaska — was created in the developing world between 1980 and 200…

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