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Life on Earth took a licking, kept on ticking

Early organisms may not have had to restart after a long spell of asteroid impacts

An extended period of asteroid bombardment early in Earth’s history may not have wiped out the planet’s nascent life after all. Indeed a report in the May 21 Nature suggests that the pummeling those extraterrestrial impacts delivered may have cracked Earth’s crust and created large numbers of hydrothermal environments where some forms of life could have thrived.

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