Climate researchers have shown that big volcanic eruptions over the past 450 years have temporarily cooled weather in the tropics—but suggest that such effects may have been masked in the 20th century by rising global temperatures.

Most consumers crave a clear understanding of brand images, making them more receptive to new marketing messages if anything clouds their vision of companies or products, according to a new study.

Using the Very Large Array of radio telescopes, astronomers have identified two protostars located only a few light-years from the galactic center. Their discovery shows that stars can, in fact, form very close to the Milky Way's central black hole.

A new report in the January 2009 issue of The FASEB Journal explains for the first time how humans keep up with microbes by rearranging the genes that make antibodies to foreign invaders.

What is language for? Communication? Or something else?

A new epidemiological study has found that among women who have never used menopausal hormone therapy, obese women are at an increased risk of developing ovarian cancer compared with women of normal weight.

MIT engineers have developed a new, highly efficient way to pair up cells so they can be fused together into a hybrid cell.

Adults with diabetes experience a slowdown in several types of mental processing, which appears early in the disease and persists into old age, according to new research.

Reuters reports that tiny nanodiamonds found throughout North America show that a "swarm of comets" hit the earth 13,000 years ago, starting a cold age that killed off mammoths and saber-toothed tigers.

A team of Johns Hopkins neuroscientists has worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. The report appears online this week in Nature.