Female Shark Reproduced Without Male DNA, Scientists Say
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A hammerhead shark that gave birth in a Nebraska aquarium reproduced without mating, a genetic analysis shows.
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Twenty new species of sharks and rays have been discovered in Indonesia in a five-year survey of catches at local fish markets, Australian researchers said Wednesday.
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The death of a black-tipped shark in a Virgina aquarium leads to two startling discoveries: She was pregnant, but there was no one in the tank who could have done it.
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A new species of shark that uses its fins to hop rather than swim, has been discovered at a German aquarium.
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British scientists say they have created human embryos containing DNA from two women and a man in a procedure that researchers hope might be used one day to produce embryos free of inherited diseases.
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Science & environment: Â· Scientists shed new light on disputed skeleton findÂ· Bone analysis supports distinct species theory
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NEW YORK  - Hair from women with breast cancer can be distinguished from hair obtained from women without the disease, researchers in Australia report.
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Sharks will migrate into Antarctic waters if warming continues, threatening unique marine animals, scientists warn.
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The world&#39;s only captive great white shark made history this week when she ate several salmon fillets, marking the first time that a white shark in captivity
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A hammerhead shark kept at a US zoo produced a pup without having had sex, scientists confirm.
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DNA analysis of bison fossils suggests climate and environmental change, not human hunters, triggered herd declines and the extinction of mammoths, saber-toothed cats, and other large mammals in Siberia and North America.
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Scientists reconstruct part of the genetic code of a 75-million-year-old mammal ancestor.
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Researchers at the Alaska Sealife Center are getting an education in the sex lives of a rare sea duck species that is disappearing from its nesting grounds in Alaska.
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A form of intersex fish, which have both male and female traits, were found more often by researchers in areas with more farming and population density, according to a new study by the U.S. Geological Survey.
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Science & environment: Cosmetic companies stop using shark liver oil amid concerns over survival of deep-sea predators
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Male monkeys that experienced a strong immune response after being injected with the protein eppin maintained the ability to copulate with female monkeys but did not impregnate any of them, a finding that could lead to the development of a new male
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A goblin shark -- a rarely seen species often called a &quot;living fossil&quot; --  was caught alive in Tokyo Bay but died after being put on display, an aquarium said.