NOVA scienceNOW
Season 4
Episode 3: Marathon Mouse/Dinosaur Plague/Franklin Chang-Díaz/Space Storms
TV-GJul 14, 2009
Watch how an "exercise pill" turns couch-potato mice into athletes, explore a controversial new theory of what killed the dinosaurs, meet the first Latino-American astronaut, and find out why the beautiful northern lights signal a threat to our electronic society.
