Is a Sixth Mass Extinction Already Happening?
Tim Wallace, Cosmos
Are we living in an era of biological annihilation? Determining whether our planet is entering its sixth mass extinction depends on clearly demonstrating current extinction rates are far above the background rates that have prevailed between the five previous mass extinctions.
Are we living in an era of biological annihilation? Determining whether our planet is entering its sixth mass extinction depends on clearly demonstrating current extinction rates are far above the background rates that have prevailed between the five previous mass extinctions.