It’s Patriot’s Day in Massachusetts, which means it’s Boston Marathon day. Some runners are stuck in Europe underneath Eyjafjallajokull’s ash cloud, but those who make it to the halfway point today will experience the Wellesley College Scream Tunnel that I write about every year. But this time (since I’ve finally joined the 21st century) you can see what it’s like yourself. There are several YouTube videos of the Scream Tunnel, but the ones from the runners’ point of view are the best. So here’s <1 minute of the wall of sound that makes this marathon extra special for the runners and the women of Wellesley.  It’s a worthy commemoration for “the shot heard around the world.”