At middle age, a great ape will neither cheat on a spouse nor buy a red sports car on impulse. But researchers have found that chimpanzees and orangutans experience midlife crises just as humans do.
It's evening in the universe. The stars we have are dying, and we're not making new ones the way we used to. A group of British and U.S. astronomers reported that the birthrate of stars in the universe has declined over the last 11 billion years. The universe is only producing stars one-thirtieth as fast as it was at its peak in the lusty primordial days when protogalaxies were colliding and merging, popping with blazing bright new stars.
Many women add soy and fiber to their diet in hopes of preventing the vasomotor symptoms of menopause -- hot flashes and night sweats. But a new study suggests it probably does not help. Researchers studied 1,651 women who had not had a period in three months but had not yet had any vasomotor symptoms. They followed them for 10 years, collecting dietary information and recording instances of hot flashes and night sweats.
Scientists in Alberta have identified a new type of horned dinosaur that looked like triceratops but lived 15 million years earlier. Called xenoceratops foremostensis, it was a 2-ton vegetarian that flourished 80 million years ago, making it the oldest known large-bodied horned dinosaur to be found in Canada. Fossils of xenoceratops were first collected in 1958, but were left unidentified at the Canadian Museum of Nature in Ottawa. Scientists working on a larger project, the Southern Alberta Dinosaur Project, have identified about 10 new dinosaurs, including xenoceratops.
If you take statins to lower your cholesterol, you may also be lowering your risk of death from cancer, new research suggests.
Ancient starlight, emitted by the first stars in the universe, has been detected using the Fermi Gamma-ray Space Telescope.
Five years ago, a report called "Nation Under Siege" illustrated the vulnerability of 31 U.S. coastal cities to flooding. But not just to any kind of flooding -- to the flooding of a permanent kind from sea level rise.
Doctors have long urged people with red hair and fair skin to avoid the sun's ultraviolet rays. Now, a study suggests that those with ginger hair and fair complexions face an elevated risk of the disease -- even when covered up. The study, published online in the journal Nature, suggests that pheomelanin -- the reddish-yellow pigment that gives rise to rusty locks and an inability to tan -- is itself a potential trigger in the development of melanoma, the deadliest form of skin cancer. Researchers discovered that redheaded mice showed almost three times as much damage due to oxidative stress than darker haired mice, leading authors to conclude that pheomelanin itself was the culprit. Evolutionary biologists say that humans evolved fair skin as they migrated to high northern latitudes, where light was less abundant in winter. By having more pheomelanin, fairer-skinned humans were better able to synthesize vitamin D, a process that's activated by sunlight. This function is so important that the trait survived despite the increased cancer risk that comes with it.
With every degree Fahrenheit rise in temperature, the atmosphere can hold 4 percent more moisture. As a result, Sandy was able to pull in more moisture, fueling a stronger storm and magnifying the amount of rainfall by as much as 5 to 10 percent compared with conditions more than 40 years ago, said Kevin Trenberth, a senior scientist at the National Center for Atmospheric Research, a federally funded research and development center. Coupled with higher sea levels -- since 1992, satellites have observed a 2.25-inch rise -- that means more water to surge onshore and penetrate farther. "That may not sound like a lot," he said. But "a small increase in sea level can actually make a big difference."
Earth's largest radio telescope is growing more powerful by the day on Llano de Chajnantor, a plateau high above Chile's Atacama desert, where visitors often feel like they're planting the first human footprints on the red crust of Mars.
In a move that has irked medical groups and delighted patient advocates, states have begun passing laws requiring clinics that perform mammograms to tell patients whether they have something that many women have never even heard of: dense breast tissue.
The ability to recognize faces is so important in humans that the brain appears to have an area solely devoted to the task: the fusiform gyrus.
The long-running detective saga involving one of North America's earliest inhabitants has taken a new twist, with the discovery that Kennewick Man -- the shockingly intact 9,300-year-old skeleton unearthed in 1996 on the banks of the Columbia River -- probably was a visitor to central Washington, not a longtime resident.