Biology news

UMSL scholar examines evolution of learning

Why do monkeys learn to be afraid of snakes and not flowers? Is this knowledge the result of evolution by natural selection? Did the monkeys that couldn't learn that association quickly die and not reproduce?

Aug 14, 2014 3.5 / 5 (2) 0

New analysis links tree height to climate

What limits the height of trees? Is it the fraction of their photosynthetic energy they devote to productive new leaves? Or is it their ability to hoist water hundreds of feet into the air, supplying the ...

Aug 14, 2014 4 / 5 (4) 0

Hoopoes' eggs show their true colors

Hoopoe females use cosmetics on their eggs - and the eggs gradually change color when they are incubated, from bluish-grey to a more saturated greenish-brown. This happens because secretion from the uropygial or preen gland ...

Aug 14, 2014 4 / 5 (1) 0