neanderthals Hard Science 42,000 years ago Earth experienced “end of days” with mass extinctions A reversal in Earth’s magnetic field 42,000 years ago triggered climate catastrophes and mass extinctions. Can the field flip again?
Hard Science 42,000 years ago Earth experienced “end of days” with mass extinctions A reversal in Earth’s magnetic field 42,000 years ago triggered climate catastrophes and mass extinctions. Can the field flip again?
