Scientific American Magazine

Boreholes drilled into continental rock can recover fossil temperatures that reveal the climate of past eras. The results require careful interpretation

Astronomers have identified powerful radio-emitting galaxies that existed when the universe was only one tenth its present age These objects offer a glimpse at the early evolution of giant galaxies

By directing the assembly of a cell's skeleton, this organelle controls division, motility and shape. The details of its structure and function are just beginning to emerge

As it has grown smaller and cheaper engineers have scoffed at theoretical barriers to its progress -- so far

Studies of the prairie vole -- a secretive, mouselike animal -- have revealed hormones that may be responsible for monogamous behavior

Autistic individuals suffer from a biological defect Although they cannot be cured, much can be done to make life more hospitable for them

More than 150 years ago the Chinese drilled one kilometer into the earth to extract brine for making salt. The well was the culmination of an 800-year-old technology

Scientists are linking genes to a host of complex human disorders and traits, but just how valid--and useful--are these findings?