The air is crisp, the ice is smooth, and the crowd is buzzing at the Olympic Park in Park City, Utah. Over a loudspeaker, an announcer introduces the next run at the October luge World Cup seeding race. Up at the start, Kate Hansen (’17) lies down on her sled and grips the ice with her spiked gloves to push off. Within seconds she is halfway down the track, a 75 mile-per-hour yellowish blur.