A new UN report says humans are “unequivocally” causing climate change. Rich countries are to blame, but poorer ones, like Madagascar, are paying the price with an unprecedented climate-induced famine.  Transcript at vox.com/todayexplained. Support Today, Explained by making a financial contribution to Vox! bit.ly/givepodcasts. Learn more about your ad choices. Visit podcastchoices.com/adchoices