Issue Date: December 7, 2015
If These Researchers Are Right, Life On Earth Started Earlier Than Once Thought
Even though it takes up no more space than Abraham Lincoln’s eye occupies on a U.S. penny, an ancient zircon grain plucked from the Australian Outback more than 30 years ago has recently stirred fervent debate among geochemists.
Researchers at the University of California, Los Angeles, analyzed the 4.1 billion-year-old gem and found inside what they believe could be the oldest known chemical evidence of life on Earth: . . .
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- Chemical & Engineering News
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