ScienceTime's upTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceConor Dillon11/07/2017November 7, 2017Why Germany doesn't have an opioid crisis, a possible end to daylight savings time in Europe, making coffee more environmentally friendly, and some falling leaves…https://p.dw.com/p/2n9tcAdvertisement