Earth is on its way to the biggest mass extinction since the dinosaurs, scientists warn
July 19, 2017
Have humans damaged the Earth's ecosystems so severely that we're well on our way to the biggest mass extinction since the dinosaurs vanished 66 million years ago? And are we running out of time to reverse the negative impacts of our actions?
Three scientists who have studied extinctions of thousands of species of vertebrates believe so, though others are skeptical of the doomsday-like findings.