Today in 2019 a runner in the London Marathon set a world record, though it wasn’t recognized as such right away. Here's the story of Jessica Anderson, who was looking to break the world record for fastest marathon run in a nurse’s uniform. Plus: NoseID lets people scan their dogs' one-of-a-kind nose prints into their system, and if the dogs get away, someone else can scan their noses to figure out who they are and reunite them with their people.