How to design fear, explained with 99% Invisible. Check them out here: 99percentinvisible.org/ Watch the previous episode from this series: bit.ly/2DDIQAL Subscribe to our channel! goo.gl/0bsAjO Chances are you wouldn’t be able to recognize a biohazard even if you were looking right at one. But the biohazard symbol? It’s pretty easy to spot. Most warning icons rely on previously established objects or symbols: a general caution might use an exclamation point, and a fire warning might use an illustration of a flame. But the biohazard symbol references an idea that is much harder to picture — and in the 50 years since its invention, it has become one of the most recognizable icons on the planet. But can the meaning of a symbol like this last an eternity? A special Department of Energy project is trying to figure that out. This is one of a series of Vox videos in partnership with 99% Invisible, an awesome podcast about design. 99% Invisible is a member of Radiotopia.fm Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out www.vox.com to get up to speed on everything from Kurdistan to the Kim Kardashian app. Check out our full video catalog: goo.gl/IZONyE Follow Vox on Twitter: goo.gl/XFrZ5H Or on Facebook: goo.gl/U2g06o