Are We Living in 6th Extinction?
Everything alive today is a descendant of Earth’s fifth mass extinction, when a 10-kilometer-wide asteroid smashed into the Yucatan Peninsula, wiping out 75 percent of our planet’s plants and animals 66 million years ago. This time around, we are the “asteroid.” Says Dr. Joe Hanson, “Now we’re erasing species faster than we can name them.” He explains in this episode of It’s Okay To Be Smart.
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