You probably know, or think you know, quite a bit about what happened in the 20th century - chances are, if you're reading this, you lived through at least some of it - and you may have referenced the Cuban Missile Crisis, the double helix, or the Wall Street Crash in conversation. But even for people who were there, it was the fastest-moving hundred years in history, so refresh your memory with these pacey profiles on everything from Sputnik to Stonewall. 30-Second Twentieth Century presents a unique approach to modern history, condensing 100 years of innovation and art, politics and...