Science Friday Published by Science Friday Hr2: Soft Robots, Carlo Rovelli, Seahorse Pregnancy Listen 46 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/732236/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend Seahorses are one of the few vertebrates where males become pregnant and give birth to offspring. A look at squishy, flexible robots. And physicist Carlo Rovelli explains how our understanding of reality has changed over centuries.