LifestylePopular Science on FacebookTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoLifestyle11/07/2016November 7, 201626-year-old Hashem Al-Ghaili, a Yemeni biologist living in Germany, makes the case for science with his infotainment videos. He's already collected about seven million fans on Facebook.https://p.dw.com/p/2SIhcAdvertisement