Spinning Theories on Planet Rotation by SciFri published on 2015-01-16T21:44:41Z More at http://scifri.me/3ldksx On June 30th of this year, the International Earth Rotation and Reference System Service will add a leap second to our clocks to keep up with the gradual slowing of the Earth. Theoretical astrophysicist Norman Murray explains what gives planets their unique rotation and what might happen to life on Earth if the planet stopped spinning. Genre Science