When Autumn Leaves Start To Fall

Botanist and founder of #BlackBotanistsWeek Tanisha Williams explains why some leaves change color during fall and what shorter days and colder temperatures have to do with it. Plus, a bit of listener mail from you! (Encore)You can always reach the show by emailing [email protected]. We're also on Twitter @NPRShortWave!Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy