BARBER: How about the weird anatomy of starfish? SHAPIRO: Cool. SCOTT: And staying up all night can ease depression - in mice. SHAPIRO: Fun. BARBER: And a record low for Antarctica's sea ice.

This week in science: Melting arctic ice, sea star anatomy and sleep deprived mice ARI SHAPIRO, HOST: Time now for our science news roundup from our friends at NPR's Short Wave podcast.