[https://youtu.be/Qo-Kv6VUlYo] (YouTube link)The a...  ...://youtu.be/Qo-Kv6VUlYo] (YouTube link)The annual Boston Marathon took place today. If you've ever wondered how reg...  ...ar pedestrians cross the street when it's full of marathon runners (and I bet you've never thought about it...  ...you've never thou...

[https://youtu.be/fOGXvBAmTsY] (YouTube link)Up un...  ...ntil about 50 years ago, women were excluded from marathons , and indeed the longest footrace in the Olympics...  .... In the early ‘60s, a few women snuck into marathons without registering, but in April of 1967, Kathri...  ...Switzer of Syracuse U...