Distinguished Scientist, Ri Vice President and explosives expert Chris Bishop presents another action-packed demonstration lecture. Following on from his explorations of Chemistry and the world of Fireworks, Professor Bishop turns his attention to the use, origins and properties of explosives. 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 Subscribe for the latest science videos: http://bit.ly/RiNewsletter