Geraint Lewis

People think Earth dies when the Sun becomes a red giant in five billion years — the more likely end is a billion years from now, when a star already 30 percent brighter than at birth pushes CO₂ too low for C3 plants, then a moist greenhouse strips the oc

Astrophysicists outline a chilling chronology for Earth's destruction, pointing to a timeline well before the Sun's red giant phase.