News tagged with external cues

No map, no problems for monarchs

Monarch butterflies have long been admired for their sense of direction, as they migrate from Canada and the United States to Mexico. According to new findings from a team of scientists, including researchers ...

Apr 08, 2013 4 / 5 (4) 0 | with audio podcast

Keeping time: Circadian clocks

Our planet was revolving on its axis, turning night into day every 24 hours, for 4.5 billion years - long before any form of life existed here. About a billion years later, the very first simple bacterial ...

Oct 02, 2012 4.3 / 5 (3) 4