2003-05-23
... ? Scientists discover how the monarch butterfly navigates 2,000-mile migration without a mapScientists have solved one of natures most enduring mysteries - how the monarch butterfly is able to navigate more than 2,000 miles on its annual migration route. A series of experiments has revealed how this tiny insect is able to marry a sophisticated biological clock with the sun's position so that it can fly across the North American continent without losing its way.
