Today we hear about muscle mass in space and an experiment being done with mice that we imagine makes them float around the space station (but it probably doesn’t). Sarah comes up with a movie idea with Air Bud. We learn whether male and female mice parent differently. Sarah explains why ketchup isn’t really a liquid or a solid, & you’re probably using it wrong. The woman who invented gender reveal parties has regrets. And Susie really hates hammocks even though Sarah says they help you sleep.