For Turtles, Earth's Magnetism Is A Built-In GPS

For Turtles, Earth's Magnetism Is A Built-In GPS : NPR

March 7, 2011 at 8:39 PM

For Turtles, Earth's Magnetism Is A Built-In GPS : NPR Source: www.npr.org Loggerhead turtles are born with an ability to know where they are on Earth, and which way to swim to get to favorable feeding grounds, a new study finds. It turns out an extreme sensitivity to the planet's magnetic field lets them determine both longitude and latitude as they migrate. http://www.npr.org/2011/03/02/134175104/for-turtles-earths-magnetism-is-a-built-in-gps?ft=1&f=1025