6th Mass Extinction Begins, Quaternary Megafauna

“We’re currently experiencing the worst spate of species die-offs since the loss of the dinosaurs 65 million years ago... with as many as 30 to 50 percent of all species possibly heading toward extinction by mid-century... Unlike past mass extinctions, caused by events like asteroid strikes, volcanic eruptions, and natural climate shifts, the current crisis is almost entirely caused by us... 99 percent of currently threatened species are at risk from human activities, primarily those driving habitat loss, introduction of exotic species, and global warming... many thousands of species are at risk of disappearing forever in the coming decades.”