Mysterious Crystals Compel Scientists to Change Stance on Earth’s History

Life could have emerged on Earth about 300 million years earlier than previously thought, according to new research.

 Living organisms could have existed on our planet 4.1 billion years ago: 300
million years earlier than was previously thought, according to
scientists.
It was a spate of ancient zircon crystals unearthed in
Western Australia that prompted a team of US researchers to make new
conclusions about Earth’s history.
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