Biology - Plants & Animals news

How spiders spin silk

Spider silk is an impressive material; lightweight and stretchy yet stronger than steel. But the challenge that spiders face to produce this substance is even more formidable. Silk proteins, called spidroins, ...

Aug 05, 2014 4.5 / 5 (6) 0

Why do snakes flick their tongues?

Many people think a snake's forked tongue is creepy. Every so often, the snake waves it around rapidly, then retracts it. Theories explaining the forked tongues of snakes have been around for thousands of ...

Jul 31, 2014 4.8 / 5 (8) 0