Science News Archive - August 04, 2009
A number of Alaskan rivers have been closed to king salmon fishing after considerable numbers of the fish failed to return to spawn.
Activation of two different kinds of neurons is necessary for appetitive and aversive memory recall in crickets. Researchers writing in the open access journal BMC Biology blocked octopaminergic (OA-ergic) and dopaminergic (DA-ergic) transmission and found that this resulted in the inability to recall pleasant and unpleasant memories, respectively.
An area of chromosome 6 that affects cattle carcass weight has been identified using two different Japanese species. Knowledge of this four-gene region, described in the open access journal BMC Genetics, should be useful in breeding beef cattle.
What do the Gulf of Mexico's "dead zone," global climate change, and acid rain have in common? They're all a result of human impacts to Earth's biology, chemistry and geology, and the natural cycles that involve all three.
Advances in ecology increasingly reveal that conventional agricultural practices have detrimental effects on the landscape ecology, creating problems for long-term sustainability of crops.
Animals and plants communicate with one another in a variety of ways: behavior, body patterns, and even chemistry.
More than twice as many District of Columbia children as previously reported had dangerously high lead levels in their blood, congressional investigators said. The U.S.
The study of the neural basis of language has largely focused on regions in the cortex â€“ the outer brain layers thought by many researchers to have expanded during human evolution
A Japanese study published on Monday showed that researchers have successfully implanted bioengineered seed-like tissue into the jaws of mice, growing new teeth for the rodents.
Some of the world's rarest and most fragile coral reefs and the economies that depend on them will be better protected thanks to a major international marine project led by the University of Southampton.