Some common U.S. birds saw declines of up to 45 percent from the West Nile virus, a new study shows—suggesting even the most familiar birds are surprisingly vulnerable.
Playing recordings of dolphin sounds, scientists hope to teach an unborn calf the crucial skill of echolocation—since the calf's mother, which is deaf, cannot.
An Australian lizard has been found to change from male to female while still in the egg during extreme heat, challenging one of the core concepts of biology, scientists say.
In contradiction to a 2005 UN report, a new study of abnormalities in barn swallows suggests that fallout from the explosion is still putting millions of people at risk.
The rhesus monkey genome, the third primate genome to be sequenced, will help advance understanding of primate evolution and what makes us distinctly human, scientists say.
A parasite has been found to alter the brains of infected rodents so the animals become attracted to—rather than repelled by—the scent of their predators.
The alien Nile perch is disappearing due to overfishing. Among the hardest hit are the fishers themselves, whose families sometimes eat fish skeletons to survive.
European adults weren't able to digest calcium-rich, high-energy milk until after they took up dairy farming, scientists report, solving a long-standing dilemma about the origin of the trait.
Japanese scientists have generated new teeth and whiskers in mice using just a handful of embryonic cells—a key development in the quest to grow replacement organs for humans.
