Science Friday Published by Science Friday Hr1: News Roundup, Marijuana Research, Twitter Bots, Chili Peppers Listen 47 min Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/655596/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend A visit with the Twitter bots that are brightening our social media experience. Plus, what gives the hot habanero and mild jalapeno their heat profile?