Podcast:Today, Explained Published On: Mon Dec 28 2020 Description: In the fourth of our five-part series, “You, Me, and Covid-19,” a reminder that we’re not the only animals who got Covid-19 this year. Science writer David Quammen explains why our health and theirs are intertwined. Transcript at vox.com/todayexplained. Learn more about your ad choices. Visit podcastchoices.com/adchoices