The Grand Canyon is a gigantic geological library, with rocky layers that tell much of the story of Earth’s history.
Scientists have traced the origins of complex life to the breakup of the supercontinent Nuna 1.5 billion years ago. This ...
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6-million-year-old Antarctic ice reveals how Earth once heated; know what it warns about tomorrow
Scientists have discovered the oldest directly dated ice and air on Earth in East Antarctica, dating back six million years.
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