Beavers are associated with activity and environmental engineering. If you are “as busy as a beaver,” you are getting things done. These aquatic rodents spend most of their time in the water as they ...

View post: This Sleek Travel Backpack Is Loaded With Smart Storage. It's the Best Personal Item You Can Bring on a Plane Video screen grab showing hunting thresher shark It has for years been ...

Thresher sharks have evolved an unusual but highly efficient hunting tactic: tail smacking. The long, elegant thresher shark tail — which spans nearly half the length of the animal's body — has ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American If you're going to have a tail that stretches ...

Add Yahoo as a preferred source to see more of our stories on Google. Killer Whale, orcinus orca, Female with Calf© slowmotiongli/Shutterstock.com The post Watch an ...