恶第四季
1.Boko Haram Unnatural Selection:The Nigerian government is determined to drive militants from a terrorist group out of the country A new gene-editing method allow scientists to change the genetic traits of plants and animals.2.Escape to Europe Cycle of Terror:Following the refugee trail from the Syrian border to Europe The global reaction to the terrorist attack in Paris impacts the fight against terrorism.3.Right to Die:Exploring the moral,political and personal questions raised by euthanasia.4.Beating Blindness White Collar Weed:Doctors and researchers make incredible strides in the fight against blindness Struggling small-scale marijuana farmers face corporate takeovers as the end of the pot-prohibition nears 5.Meathooked End of Water:Examining the environmental harm of industrial meat operations Assessing the depths of the world's water crisis.6.Return to Yemen Church and States:Examining the conflict in Yemen Exploring the ongoing battle for LGBT equal rights in the United States.7.Palestine Now and Viva Cuba Libre:Exploring the lives of young Palestinians today Examining the political thawing of relationships between Cuba and the United States.8.Afghan Women's Rights Floating Armories:Violence and oppression are still a fact of life for women in Afghanistan Private military contractors protect global commerce.9.The Future of Energy:Examining the future of how to make and use energy and how to meet the growing demand as carbon emissions are cut.10.Trump in Dubai China in Africa:The plight of migrant workers in Dubai Examining the increasingly prominent business relationship between China and Africa.11.The Deal City of Lost Children:Exploring the recent Iran deal from both sides Tribes of homeless children live along the tracks in Kolkata,India.12.The End of Polio and Collateral Damage:Health workers put their lives on the line in Pakistan to eradicate polio Examining the devastating effects of unexploded ordnance in Myanmar and Laos.13.State of Surveillance:Shane travels to Moscow to meet with Edward Snowden and discuss government surveillance programs.14.Heroin Crisis New Age of Nukes:The effects of America's Heroin epidemic and the next nuclear arms race.15.Flint Water Crisis Libya on the Brink:Examining the effects of the water crisis in Flint,Mich.In Libya,rival militias fight to save the country.16.Die Trying:Patients and top researchers across the U.S.discuss recent measures taken to tackle ALS Exploring the regulatory hurdles faced by ALS patients and drugmakers.17.Student Debt Fecal Medicine:The correlation between student-loan borrowing and the soaring cost of college tuition A medical revolution involves using stool from a healthy person to treat severe intestinal infections in others.18.The New $pace Race Closing Gitmo:NASA and a growing community of private companies decide to prepare for Mars exploration Ex-detainees reveal what really happens behind the walls of the American prison at Guantanamo Bay,Cuba.
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