Recent satellite data indicates the world's largest canyon may be hiding under the Antarctic ice sheet. A preliminary analysis revealed a massive chasm may be buried below, perhaps connected to an undiscovered subglacial lake.
Praying mantises fitted with blue and green miniature glasses prove the insects use 3D vision to hunt. This could help scientists better understand how vision evolved in humans, and ultimately improve visual perception in robots.
Smaller hatchlings who have to compete with larger siblings for food grow up become obese adults birds, say researchers who tested starling hatchlings to determine whether competition for food after birth had a long-lasting effect.