How do you know how likely something is to kill you? Or how do you work out how beneficial something is? Welcome to micromorts and microlives! Just how dangerous is crossing the road? And what's the real payback on eating healthily and exercising regularly? Neither are easy to get our heads around -- especially when it comes to that ultimate measure of "badness" -- dying. To make things a little easier, "micromorts" and "microlives" can help estimate the risks and benefits of what you do -- and what you don't do. Further Information: Microlives - David Spiegelhalter on Microlives: http://understandinguncertainty.org/microlives British Medical Journal article on microlives: http://dx.doi.org/10.1136/bmj.e8223 Microlives calculator: http://journals.bmj.com/site/microlives/ Wikipedia: http://en.wikipedia.org/wiki/Microlife Microlives: A lesson in risk taking (BBC): http://www.bbc.com/future/story/20120209-a-lesson-in-risk/2 Micromorts -- John Green and Mental Floss on Micromorts: https://www.youtube.com/watch?v=VLmBJ4_5eG4 David Spiegelhalter on Micromorts: http://understandinguncertainty.org/micromorts Wikipedia: http://en.wikipedia.org/wiki/Micromort Carnegie Mellon University's Death Risk Website: http://www.deathriskrankings.com/ Risk Bites was created by Andrew Maynard. This week's video was produced by: Andrew Maynard David Faulkner Risk Bites is supported by: University of Michigan School of Public Health. http://www.sph.umich.edu/ University of Michigan Risk Science Center. http://umriskcenter.org/ Risk Bites is your guide to making sense of risk. We cover everything from understanding and balancing the risks and benefits of everyday products, to health science more broadly, to the potential impacts of emerging technologies, to making sense of risk perception. If you enjoy our videos, please subscribe, and spread the word!