When lava flows and glaciers recede, predicting how species take over
Biology /
May 23, 2007 |
4 / 5 (3) |
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When fire, clearcutting, lava or receding glaciers create empty habitat, species arrive to form a new ecological community. Adverse conditions -- such as isolation of the new community or an unfavorable climate ...
FDA wants MRI contrast agent warning
May 23, 2007 |
4 / 5 (3) |
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The U.S. Food and Drug Administration wants a warning printed on the labels of all gadolinium-based magnetic resonance imaging contrast agents.
Ground-based observatories join forces with Venus Express
Space & Earth / Space Exploration
May 23, 2007 |
4.5 / 5 (2) |
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Data from Venus Express, which has been revealing new and crucial details about our closest planetary neighbour, will now be augmented by synoptic data from a coordinated ground-based observation campaign.
Fragile X syndrome -- A stimulating environment restores neuronal function in mice
May 23, 2007 |
4.5 / 5 (2) |
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Fragile X syndrome is the most common form of inherited mental retardation, occurring in 1 in 3600 males and 1 in 4000 to 6000 females.
Bacteria show promise in fending off global amphibian killer
Biology /
May 23, 2007 |
4 / 5 (2) |
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First in a petri dish and now on live salamanders, probiotic bacteria seem to repel a deadly fungus being blamed for worldwide amphibian deaths and even extinctions. Though the research is in its early stages, scientists ...
System to pinpoint airline passengers who contaminate cabins
May 23, 2007 |
4 / 5 (2) |
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Researchers developing a system that uses mathematical models and sensors to locate passengers releasing hazardous materials or pathogens inside airline cabins have shown that the technique can track a substance ...
Japanese scientists explore pluripotency
Biology /
May 23, 2007 |
4 / 5 (2) |
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Japanese scientists have discovered how pluripotency -- the ability of stem cells to differentiate into other cell types -- is regulated.
STS-118 pennant design winner selected
Space & Earth / Space Exploration
May 23, 2007 |
3 / 5 (2) |
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The National Aeronautics and Space Administration has selected the winner of the "NASA Space Pennant Design Challenge."
Botulism bug has few genome wrinkles
May 23, 2007 |
5 / 5 (1) |
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The genome of the organism that produces the world's most lethal toxin is revealed today. This toxin is the one real weapon in the genome of Clostridium botulinum and less than 2 kg - the weight of two bags of sugar - is ...
Tiny genes may increase cancer susceptibility
May 23, 2007 |
5 / 5 (1) |
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New evidence indicates that small pieces of noncoding genetic material known as microRNAs (miRNAs) might influence cancer susceptibility. Differences in certain miRNAs may predispose some individuals to develop cancer, say ...
Check and balance for neuron activity provides insight into schizophrenia, seizures
May 23, 2007 |
4 / 5 (1) |
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Two genes important for human development and implicated in cancer and schizophrenia also help keep a healthy balance between excitation and inhibition of brain cells, researchers say.
Jefferson scientists use gene therapy to reverse heart failure in animals
May 23, 2007 |
4 / 5 (1) |
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Heart researchers at the Center for Translational Medicine at Jefferson Medical College have used gene therapy to reverse heart failure in animals. In addition, they found that this gene therapy strategy had "unique and additive ...
Mother birds 'engineer' their offspring
Biology /
May 23, 2007 |
3 / 5 (1) |
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Bird species that have relatively long incubation periods and short nestling periods for their body size have higher concentration of androstenedione than those species whose developmental time is shifted towards relatively ...
Cannibalism of the young allows individual fish to specialize
Biology /
May 23, 2007 |
3 / 5 (1) |
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Whitefish, Arctic char, threespine stickleback and some sunfishes display quite discrete groups living in the same lakes but utilizing different food resources in order to survive. The phenomenon is called "resource polymorphism." ...
Mid Sweden University leads development of digital color x-rays
May 23, 2007 |
3 / 5 (1) |
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In the future doctors will be able to find more tumors at an early stage while using a smaller x-ray dose for each examination. Color x-rays offer new possibilities for medical diagnoses.
