This may not be something you'd thought of doing but now you know how the speed of light can be measured using only some marshmallows and a microwave oven. Watch the full second lecture of the series: http://www.rigb.org/christmas-lectures/watch/1999/arrows-of-time/living-on-the-edge-of-chaos?utm_source=youtube&utm_medium=social&utm_term=description From the fabric of space-time to the limits of the quantum world, Neil Johnson takes us on a journey through time in his 1999 Christmas Lecture series "Arrows of Time". In his second lecture, Neil looks at how order emerges from chaos, how complex life can appear against entropy. Watch the full series: http://www.rigb.org/christmas-lectures/watch/1999/arrows-of-time The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy