A study in the journal Nature finds that prions can team up with amyloid beta, the protein that forms the big plaques in Alzheimer's, to make the condition much worse. Karen Hopkin reports
Wall lizards are good guinea pigs for signs of pollution
The mischievous mollusk that flooded a Santa Monica aquarium is not the first MENSA-worthy octopus
A Q&A with stellar and planetary scientist Alan Boss about the holy grail of extrasolar planet research--finding Earth-like planets
Discoverers glean clues about human predecessors from tracks left on an ancient river shore in Kenya
Much of our plastic ends up floating in the North Pacific
A psychologist probes how altruism, Darwinism and neurobiology mean that we can succeed by not being cutthroat.
This fish might look made for science—or just plain made-up—but it's 100 percent real. First described in 1939, this "barreleye" has been somewhat of a mystery to science.
Study shows the best recipe for shedding pounds
University of Wisconsin evolutionary biologist Sean Carroll talks about his new book, Remarkable Creatures, which chronicles the derring-do of some of natural history's brightest stars. And FoundAnimals.org's Katy Palfrey discusses the Michelson Prize, for the development of a nonsurgical pet-neutering technique. Plus, we'll test your knowledge of some recent science in the news. Web sites related to this episode include foundanimals.org; seanbcarroll.com
Belief is powerful medicine, even if the treatment itself is a sham. New research shows placebos can also benefit patients who do not have faith in them
A journal retracts a paper that supported the idea that your wife is likely to look like your mother, but others say that Freud's theory may still hold water
Efforts are being made to keep this cat from extinction
When mice are exposed to enriched environments, their offspring can overcome genetic defects that impair long-term memory.
Fresh neurons arise in the adult brain every day. New research suggests that the cells ultimately help with learning complex tasks—and the more they are challenged, the more they flourish
It will be a long time before machines can be "more human than human," as scientists are just starting to decode what happens inside our brains as we recognize a spoken word. Christie Nicholson reports.
Speaking at the annual meeting of the American Association for the Advancement of Science in Chicago on February 14th, astronomer Alan Boss, author of the new book The Crowded Universe, said that we're about to find out just how many habitable planets are out there--and he thinks there are sextillions. Steve Mirsky reports
Tuberculosis has never stopped being one of the world's most lethal infections