Story
Nature's engineer
The Beaver's Busy Dam
A beaver can chew through a tree trunk in one night and use it to dam a stream into its own private pond.
Habitat
Habitat
Nature's engineer
A beaver can chew through a tree trunk in one night and use it to dam a stream into its own private pond.
Ancient sky acrobat
A dragonfly can fly straight up, straight down, and even backward, because each of its four wings moves on its own.