Earth's growing population: 'A direct affront to our own survival'

The population of planet Earth reached 8 billion people late last year. By the year 2100, we're headed for 2 billion more. What does that mean for us and our planet? Elizabeth Hadly is a professor of biology at Stanford University, and director of the Jasper Ridge Biological Preserve in California's Santa Cruz Mountains. For four decades, she's been an eyewitness to dramatic changes in the plant and animal kingdoms caused by human beings. About: Hosted by Meghna Chakrabarti, On Point is WBUR’s award-winning, daily public radio show and podcast. Its unique combination of original reporting, first-person stories, and in-depth analysis creates an experience that makes the world more intelligible and humane. Deep dives. Original stories. Fresh takes. We’d appreciate your help to better understand On Point's podcast listeners and get your feedback — it’ll take you about 10 minutes or less! Take our survey: https://www.surveymonkey.com/r/onpointpodcast