We’ve all seen it but do you really know what lightning is? Professor Joseph Dwyer says lightning is an electrical mystery. A mystery he’s trying to unravel. We talk lightning, gamma ray bursts, blue jets and the safest place in a storm. Then, we unveil a “scary” Top 5.Contact the ShowLightning Safety InformationProfessor Joseph Dwyer: Pointless: Top 5: Learn more about your ad choices. Visit megaphone.fm/adchoices