Why the Amazon could be at risk of "collapsing"

French President Emmanuel Macron wants the wildfires in the Amazon rainforest to be on the agenda at this weekend’s G-7 summit. In Brazil, President Jair Bolsonaro has authorized the military to join the fight, and forces will begin deploying on Saturday. Deforestation has increased since Bolsonaro took office last year, and he previously described the rainforest protection as an obstacle to his country’s economic development. Naturalist Paul Rosalie wrote about his experiences in the jungle in his 2014 book, "Mother of God." Rosalie joins "CBS This Morning Saturday" to talk about the fires.