all l of the sum, we should have been doing somomething abouttt. only sometimes make changes when they feel they have no other choice. is partly ththe role of physiciansns to help themm reale they have no other choice because of our health and our lives depend on it. for colombia to meet members of latin america's oldest rebel group. and for timbuktu in mali, badly dangered by so-called islamic state, life is returning to so-called oasis town. but first, we head to flint, where the town's drinking water is making people ill. it is contaminated with lead. lead is the worst environmental toxin of all, according to a global study, but it's still widely used in the manufacture of toys, jewelry, even candles. mining companies extract it,

all l of the sum, we should have been doing somomething abouttt. only sometimes make changes when they feel they have no other choice. is partly ththe role of physiciansns to help themm reale they have no other choice because of our health and our lives depend on it. 8úxúg a:ñ?ññwçbq narror: the st

all l of the sum, we should have been doing somomething abouttt. only sometimes make changes when they feel they have no other choice. is partly ththe role of physiciansns to help themm reale they have no other choice because of our health and our lives depend on it. úgç ♪ >> f from new yorkrk, this is "d"democracy now!"!" >> i am going g to forget the years of raping and lynching and forget my people and i i'm going to look at peoeople who are tryg toto do right anand do not s sem trying to kill me? i am not that big of a fool. >> mohammed ali has died at the age of 74. he was one of the most iconic figures of the

all l of the sum, we should have been doing somomething abouttt. only sometimes make changes when they feel they have no other choice. is partly ththe role of physiciansns to help themm reale they have no other choice because of our health and our lives depend on it. úgç narrator: 2008, discontent turns ininto confrontationon. around the world people e take o the streets. ♪ music momar: they use tear gas, electric batons, plastic bullets. it was a very, very hard day. narrator: protests like these in dakar and senegal spread to many other cities. there were similar riots in egypt and in india. in haiti the president was overthrown. the reason? high food prices. one of the major causes: climate change. villagers are leaving their homes simply to survive.

all l of the sum, we should have been doing somomething abouttt. only sometimes make changes when they feel they have no other choice. is partly ththe role of physiciansns to help themm reale they have no other choice because of our health and our lives depend on it. 8úxú laurie: good morning, tree huggers! [applause] one week ago, the heads of the three most powerful agencies to determine the future of l.a.'s water infrastructure met to discuss the wayays they c couldk togegether to deal with a d drot in southern california. the remarkable thing ababout ths meeting of the mighty chiefs of the department of water and power, county flood control, and the department of sanitation, whose decisions will shape the destiny of the l.a. watershed, is that they had never met together before. instead, they've always run their