Sea urchins are spiny marine animals. Some of them like to hide in holes that they dig out of limestone in the ocean floor, using teeth that are ground down and yet remain sharp. What makes these teeth so special that they can drill through rock and not go blunt?

Snowball is a sulfur-crested cockatoo. He’s also a YouTube sensation, as this bird dances by bobbing his head and lifting his feet to a musical beat.

On the heels of President Barack Obama’s March 9 order to use public monies to support embryonic stem cell research,¹ another source of stem cells has become available—blood. Blood would be an ideal supplier for stem cells because it is a renewable tissue and harvesting blood components does not end life.

Evolutionary scientists are often on the lookout for evidence that they hope will vindicate Darwin’s outdated theory of evolution. Recently, a team of geneticists discovered that although the non-coding DNA sequences of fish have “almost no” matching sequences in humans, their gene expression profiles are nevertheless similar.

Chimps are physically stronger than humans, as demonstrated in recent national news when a chimpanzee severely mauled a Connecticut woman. Police were forced to shoot and kill it after its owner failed to subdue it with a knife from her kitchen.¹