Science News Archive - April 29, 2011
For the first time, scientists have been able to paint a detailed chemical picture of how a particular strain of bacteria has evolved to become resistant to antibiotics.
In a paper to be published today [April 29, 2011] in the journal Science, a team of Boston University researchers under the direction of Michael Hasselmo, professor of psychology and director of Boston University's Computational Neurophysiology Laboratory, and Mark Brandon, a recent graduate of the Graduate Program for Neuroscience at Boston University, present findings that support the hypothesis that spatial coding by grid cells requires theta rhythm oscillations, and dissociates the mechanisms underlying the generation of entorhinal grid cell periodicity and head-direction selectivity.
Biologists at UC San Diego have discovered that electrical oscillations in the brain, long thought to play a role in organizing cognitive functions such as memory, are critically important for the brain to store the information that allows us to navigate through our physical environment.
Researchers from Woods Hole Oceanographic Institution (WHOI) and their colleagues have discovered that massive, swirling ocean eddiesâ€”known to be up to 500 kilometers across at the surfaceâ€”can reach all the way to the ocean bottom at mid-ocean ridges, some 2,500 meters deep, transporting tiny sea creatures, chemicals, and heat from hydrothermal vents over large distances.
The International Energy Agency (IEA) warned Thursday that a global warming target could be missed three times over if countries fail to promote clean energy.
Increased Agulhas "leakage" significant player in global climate variability.
A Philadelphia botanist who has studied rare plants for 50 years, but has never attained the honor of having a plant named for him is finally getting his due, but with a barely visible organism so rare it may never be seen again.
Scientists have observed a "super-aggregation" of more than 300 humpback whales gorging on the largest swarm of Antarctic krill seen in more than 20 years in bays along the Western Antarctic Peninsula.
Experts suggest that the deadly tornadoes that whipped across the South may have been the largest and most powerful ever to be recorded, leaving behind total destruction and a rising death toll.
Thousands of members of the public across Europe have taken part in one of the largest evolutionary studies ever, by observing banded snails in their gardens and open public spaces.
- a study of the individuals in a group of people within a specific context and their relationships.
- In rhetoric, the description of any one's personal appearance.