Israel's Dead Sea, also called the Salt Sea, lies over 1,000 feet below sea level and is the site of certain ancient events recorded in the Bible. Some scientists thought the sea is too salty to have ever been dry, since such extreme saltiness would presumably prevent all the water from evaporating. Now, a deep drill sediment core appears to show that they were wrong.

Many people in the post-industrialized era have problems with crowded teeth because there's not enough room in their lower jaws. The teeth sometime erupt crookedly and cause malocclusions, or misalignments of the teeth between the upper and lower jaws, which can cause chewing problems.

An international team of biologists recently reported on the supposed evolution of sound production in perch-like fishes. Researchers know that some fish cause their swimbladders to vibrate by using unique superfast muscles that produce, for example, courtship calls. How did these special muscles originate?

A recent study found that about one in five scientists who say they are atheists or agnostics actually attend church or some other religious institution, and the main reason may be because of their children.

Biologists recently found that feather colors and songs vary among some species within the South American genus Sporophila, also known as seedeater birds. But strangely, they did not find any genetic differences in the form of species-specific DNA markers. Do these variations fit any evolutionary pattern?