Thursday, 9 February, 2012

If you were to draw lines representing your social connections to all your friends, your friends’ friends, and your friends’ friends’ friends, what would it look like? For Jeffrey Heer of the University of California, Berkeley, it looks like a big blue ball of glittery fuzz. In this image, Heer is represented at the center [...]

The essential skills of bird migration are orientation — knowing north from south, and east from west — and navigation, having some sort of “map” to establish the location you’re aiming for, says Stanley Temple, emeritus professor of conservation. Birds usually orient themselves by observing the sun and the stars – although some can also [...]