Who's on First? - Talk o' Bell

Part 3 of Who's on First?, featuring the true story (and a false one) of how Alexander Graham Bell beat Elisha Gray to the patent on the telephone.

Who's on First? - Sean B. Carroll

Part 4 of Who's on First?, featuring Sean B. Carroll, molecular biologist and geneticist at the University of Wisconsin Madison and author of Remarkable Creatures: Epic Adventures in the Search for the Origins of Species.