Since classifications have existed, wall lizards have been known to exhibit a diversity of throat colors, a phenomenon that ...

A common element in “Star Trek” and other science fiction is their depiction of humanoid alien species. If life exists ...

A fish thought to be evolution’s time capsule just surprised scientists. A detailed dissection of the coelacanth — a 400-million-year-old species often called a “living fossil” — revealed that key ...

A new study comparing invasive cane toads in Japan and Australia has found substantial changes in body size and shape have ...

Hidden within fish DNA are powerful genetic twists that may explain one of nature’s biggest mysteries: how new species form so quickly. In Lake Malawi, hundreds of cichlid fish species evolved at ...

One hundred years ago, the small town of Dayton, Tenn., became the unlikely stage for one of the most sensational trials in American history. A local substitute teacher, John Scopes, was charged with ...

Evolution has been known as survival of the fittest, however the fittest may also have been simply the luckiest. Though genetics are a driving force of evolution, many evolutionary changes were a ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Well, scientists are playing god again, at least in the world of computer simulations. This time around, instead of recreating dinosaurs like John Hammond and his scientists in Jurassic Park, ...