Ancient Earth: Artist's rendition of what our planet might have looked like in the Ediacaran Period based on the researchers’ hypothesis, which connects a weak planetary magnetic field (evidenced by powerful aurorae) with an increase in the size and complexity of organisms. (Courtesy: Michael Osadciw/University of Rochester)
The list of conditions required for complex life to emerge on Earth is contentious, poorly understoo
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Isabelle Dumé
is a contributing editor to Physics World