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News | Archive (2 December 2010)
Perinatal bisphenol-A exposure may affect fertility
— 20:31 GMT | HealthExposure to a ubiquitous environmental chemical during pregnancy may impair reproductive capacity of female offspring, according to a study published online in advance of print on December 2 in Environmental Health Perspectives. Fertility decreased over time in female mice that had been exposed during foetal and neonatal (perinatal) development to doses of bisphenol-A (BPA) that were lower than or equal to human environmental exposure levels…
Expert panel addresses safety in medical imaging
— 20:28 GMT | HealthAn expert panel convened today at the annual meeting of the Radiological Society of North America (RSNA) to discuss medical imaging appropriateness, ionising radiation from imaging procedures and efforts under way to curb overutilisation, decrease radiation dose and educate patients on the risks and benefits of medical imaging…
New psychology theory at Rensselaer enables computers to mimic human creativity
— 20:25 GMT | HealthA dealer in antique coins gets an offer to buy a beautiful bronze coin. The coin has an emperor's head on one side and the date '544 B.C.' stamped on the other. The dealer examines the coin, but instead of buying it, he calls the police. Why?…
Rainforest conservation needs a new direction to address climate change
— 20:22 GMT | EnvironmentConservation and international aid groups may be on the wrong course to address the havoc wreaked by climate change on tropical rainforests, according to a commentary appearing in the journal Nature on 2 December 2010…
Relationship-strengthening class improves life for new families
— 20:19 GMT | HealthExpectant parents who completed a brief relationship-strengthening class around the time their child was born showed lasting effects on each family member's well being and on the family's overall relationships, according to a recent Penn State study…
Invasive pest danger closer than you think
— 20:16 GMT | BiologyIn Australia, when crossing from one state to another, travellers may encounter a quarantine stop and may be required to forfeit recently purchased fruits and vegetables as a hedge against invasive pests. But in the U.S., crossing state lines is free wheeling, according to researchers from the U.S., Australia and New Zealand, who evaluated the threat of invasive pests to states from within the country…
Global sea-level rise at the end of the last Ice Age
— 20:13 GMT | EnvironmentSouthampton researchers have estimated that sea-level rose by an average of about 1 metre per century at the end of the last Ice Age, interrupted by rapid 'jumps' during which it rose by up to 2.5 metres per century. The findings, published in Global and Planetary Change, will help unravel the responses of ocean circulation and climate to large inputs of ice-sheet meltwater to the world ocean…
Drug-like compound stops thyroid overstimulation in early NIH studies
— 20:10 GMT | HealthResearchers at the National Institutes of Health have identified a compound that prevents overproduction of thyroid hormone, a finding that brings scientists one step closer to improving treatment for Graves' disease…
Cassini returns images of bright jets at Enceladus
— 20:07 GMT | AstronomyNASA's Cassini spacecraft successfully dipped near the surface of Saturn's moon Enceladus on Nov. 30. Though Cassini's closest approach took it to within about 48 kilometres (30 miles) of the moon's northern hemisphere, the spacecraft also captured shadowy images of the tortured south polar terrain and the brilliant jets that spray out from it…
Tumours bring their own support cells when forming metastases
— 20:04 GMT | HealthThe process of metastasis requires that cancer cells travelling from a primary tumour find a hospitable environment in which to implant themselves and grow. A new study from Massachusetts General Hospital (MGH) Cancer Centre researchers finds that circulating tumour cells prepare this environment by bringing along from their original site noncancerous cells that support tumour growth. The report has been published online in PNAS Early Edition…
New transient radiation belt discovered at Saturn
Craters on Vesta and Ceres could hold key to Jupiter's age