The diamond weevil, which makes its home in the Brazilian tropics, has a body studded with tiny, brilliant reflectors. Each one is like a diamond, reflecting different-colored light in shiny arrays. New research has probed the microstructure of these brilliant facets and discovered that the way they work is familiar—but the way they are made is not.

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.

The eye is an ingeniously designed biological mechanism. In 1802, William Paley used eyes as a clear illustration of what he called "contrivances," i.e., "well-designed machines." Before Charles Darwin's publications, many naturalists used Paley's textbook, Natural Theology.

According to evolutionary theory, chemicals must have somehow organized themselves into cellular life, presumably long ago. And that means that enzymes must have formed themselves, too.

Geckos can run just as easily along a wall or ceiling as they can across a floor. This is due to special pads on their toes, which can even grip glass. No man-made adhesive technology comes even close to functioning as well as gecko feet. And after years of research, the last missing puzzle piece to gecko foot design has apparently been found.