Why eggs have such weird shapes, doubly domesticated cats, and science balloons on the rise

This week we have stories on the new capabilities of science balloons, connections between deforestation and drug trafficking in Central America, and new insights into the role ancient Egypt had in taming cats with Online News Editor David Grimm. Sarah Crespi talks to Mary Caswell Stoddard about why bird eggs come in so many shapes and sizes. Listen to previous podcasts. [Image:; Music: Jeffrey Cook] Learn more about your ad choices. Visit megaphone.fm/adchoices