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.