Earth's sixth mass extinction event already under way, scientists warn

Researchers talk of ‘biological annihilation’ as new study reveals that billions of populations of animals have been lost in recent decadesA “biological annihilation” of wildlife in recent decades means a sixth mass extinction in Earth’s history is already well underway and is more severe than previously feared, according to new research.Scientists analysed both common and rare species and found billions of regional or local populations have been lost. They blame hu