Earth
Calculations may have overestimated extinction rates
Species are being driven to extinction – but perhaps not as rapidly as we thought, because of a mathematical error that has gone unnoticed for decades
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Species are being driven to extinction – but perhaps not as rapidly as we thought, because of a mathematical error that has gone unnoticed for decades
April has been a deadly month for the US tornado states. New ÐÓ°ÉÔ´´ explains how severe the outbreak has been, and what has caused it