Down's syndrome theory shattered
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Scientists believe they have disproved a 30-year-old notion of what causes Down's syndrome.
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Scientists refute a longstanding theory of how HIV slowly depletes the body's capacity to fight infection.
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New research reveals that humans have only about 25,000 genes instead of the 100,000 originally guessed. Researchers scratch their heads. By Kristen Philipkoski.
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Parents of a short child who believe growth hormone therapy will better his or her social life may be mistaken, new study findings suggest.
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Rett syndrome can be substantially reversed in mice by correcting the errant gene, new research suggests.
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Liberal bias versus right-wing conspiracy is a wonderful distraction. There is evidence enough on both sides. How can opposite claims be true? Confront a physicist with evidence supporting contradictory hypotheses and she will go looking for a more basic cause. Let's try that.
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Researchers claim to have solved the mystery of the people who simply do not count. It could be because they are lost for words.
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Scientists show the genetic codes of individuals can vary hugely - far more than was previously thought.
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A comprehensive study finds that abortion and miscarriage lead to low birth weight and preterm birth. But is 40-year old data still relevant today?
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Some babies who do not have full-blown fetal alcohol syndrome can still develop IQ problems, a new study indicates.
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If verified, the research could shake up the debate over human embryo research that has divided the country for the past six years.
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Research points to a rare change in genetic structure as the possible cause of autism, raising hopes that better therapies can be found.
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For decades, doctors have operated on babies born with ambiguous genitalia. But there is a growing debate about the role physicians Â and parents Â should play in physically shaping children.
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Arthur Miller ignored his son with Down syndrome. How does that affect this playwrightâs legacy?
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It's been described as outdated,  bureaucratic, out of touch and at least one leading fertility  expert has called for it to be scrapped.
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Science & environment: Tissue samples that might help discover causes of cot death are being needlessly destroyed, say experts
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Daniel Kerner's parents knew the experimental brain surgery was risky, but without it the 6-year-old surely would die. Last month in Portland, Ore., doctors for the first time transplanted stem cells from aborted fetuses into his head in a desperate bid to reverse, or at least slow, a rare genetic disorder called Batten disease. The so-far incurable condition normally results in blindness and paralysis before death.