The National Geodetic Survey doesn't often get the opportunity to take detailed measurements of the massive stone obelisk that sits in the middle of Washington, D.C.
But a 2011 earthquake in nearby Mineral, Va., damaged the Washington Monument enough that to repair it, the tower had to be wrapped in scaffolding. That gave surveyors access to the very top of the structure.
This week's show, featuring a visit from our pal Kat Chow, kicks off with a Thor-inspired discussion of the sometimes fraught world of sibling relationships. We talk about where we come from in our own sibling worlds, and then check in with fictional siblings and real-world siblings. (Stephen has concerns regarding the Jonas Brothers.)