The rate of extinction today is estimated to be 1,000 to 10,000 times faster than the base rate in the fossil record. Some scientists are calling it “the sixth mass extinction.” But what does that mean, and what came before it? To explore this, we’re excited to announce a new series with lindsay_nikole, where we'll dive into the “Big Five” mass extinctions of Earth’s past, as well as the one underway. Watch the first episode now on Colossal’s YouTube channel! | Colossal Biosciences