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Saturday, April 28, 2012

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News


Sperm viability greatly reduced in offspring of animals treated with common antibiotic tetracycline

Posted: 27 Apr 2012 07:02 AM PDT

Scientists report that male pseudoscorpions treated with the antibiotic tetracycline suffer significantly reduced sperm viability and pass this toxic effect on to their untreated sons. They suggest that a similar effect could occur in humans and other species.

Polluting China for the sake of economic growth

Posted: 27 Apr 2012 07:01 AM PDT

China's economic growth will continue to be energy-intensive and highly polluting for the foreseeable future with emissions and efficiency far below capital growth on the agenda, according to a new study.

When to have kids: A complex question for hazel dormice

Posted: 27 Apr 2012 07:01 AM PDT

Unlike many of their rodent cousins, common dormice hibernate. Their life history strategies have now been investigated, with surprising results: Common dormice give birth to young either as early as possible after waking up from hibernation or as late as possible, just in time to get the young fit for hibernation.

Scientists provide first large-scale estimate of reef shark losses in the Pacific Ocean

Posted: 27 Apr 2012 07:01 AM PDT

First study to provide estimates of reef shark losses in the Pacific Ocean are sobering. Researchers noted the enormous detrimental effect that humans have on reef sharks.

Purple sea urchin metamorphosis controlled by histamine

Posted: 27 Apr 2012 06:59 AM PDT

Now that hay fever season has started, sufferers are well aware of the effect of histamines. However it is easy to forget that histamine is also a neurotransmitter involved in controlling memories, regulating sleep, and controlling secretion of gastric acid. New research shows that for the purple sea urchin histamine is also responsible for controlling metamorphosis from a free swimming larval form to the spiny adult living on the sea floor.

Connecting cilia: Cellular antennae help cells stick together

Posted: 24 Apr 2012 07:27 PM PDT

Primary cilia are hair-like structures which protrude from almost all mammalian cells. They are thought to be sensory and involved in sampling the cell's environment. New research shows that cilia on cells in the retina and liver are able to make stable connections with each other - indicating that cilia not only are able to sense their environment but are also involved in cell communication.

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