Humans are Altering Life

Guest: Helen Pilcher, Science and Comedy Writer, Author of “Life Changing: How Humans are Altering Life on Earth” We just can’t help ourselves, really. We are pushing evolution to its limits. Some of it is deliberate–like domesticating animals and modifying the genetics of plants. Some of it is accidental–like how our presence and pollution are prompting species to mate that wouldn’t have normally. Ever seen a Pizzly Bear? It’s a hybrid Polar/Grizzly. Not all of our influence on nature is bad, though. Humans are starting to use this power to bring species back from the brink of extinction. (Originally aired on June 25, 2020)