Pluto's mysteries revealed and a daily news roundup

Alan Stern discusses the first scientific results from the New Horizons July 14 flyby of Pluto, which revealed details about the dwarf planet's geology, surface composition, and atmosphere; Catherine Matacic talks about dino temps, Paleo-sleeping, and editing pig organs. Hosted by Sarah Crespi. Learn more about your ad choices. Visit megaphone.fm/adchoices