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Like lipstick on a collar, new DNA evidence is pointing to ancient affairs between bonobos and chimpanzees. Chimps carry a small percentage of bonobo DNA, researchers report in the Oct. [...]

Garbled signals from cellular antennas may have grounded the Galapagos cormorant. Galapagos cormorants (Phalacrocorax harrisi) are the only cormorant species with wings too small to lift the birds off the [...]

Giraffes' genes tell a not-so-tall tale about growing necks to great lengths. Tweaks to genes important for development may account for both the giraffe's stature and turbocharged cardiovascular system, researchers [...]

Humans and Neandertals may have hooked up much earlier than previously thought. Early modern humans interbred with Neandertals about 100,000 years ago, an international group of researchers reports in the [...]

Extinct human cousins may have used some of the same genes differently than modern people do, a genetic analysis reveals. Compared with living people, Neandertals and ancient Siberians known as [...]

Complex marine creatures called comb jellies should replace brainless, gutless, simple sponges at the base of the evolutionary tree of animal life, a new report asserts. Scientists have long assumed [...]