Virus Crisis | National Geographic In the last three decades, more than 30 mysterious, and sometimes deadly diseases have emerged around the globe. Learn how globalization has helped spur the world’s virus crisis. October 27, 2017 Education, Environment, Health Share This Video Tweet Share Share Email National Geographic Related Videos Venezuelans face severe food shortage Health, Human Venezuelans face severe food shortage What is Greenwashing? Education, Environment, Health What is Greenwashing? Bios Urn Stories Education, Environment, Human Bios Urn Stories