A recent increase in polar mesospheric clouds could be due to a recent increase in space traffic, a new study suggests. Polar mesospheric clouds are diffuse collections of water ice crystals in the mesosphere near the poles ...
Earth Sciences
Jul 15, 2013
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(Phys.org) —In 1921, a Russian entomologist named Boris Uvarov made a curious discovery. He noticed that a single species of grasshopper could transform its appearance and behavior, depending on its population density. ...
Plants & Animals
Jul 12, 2013
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Biologists quote Lewis Carroll when arguing that survival is a constant struggle to adapt and evolve. Is that true, or do groups die out because they experience a run of bad luck? Charles Marshall and Tiago Quental of UC ...
Evolution
Jun 20, 2013
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Brazilian geologists announced the discovery, 1,500 kilometers (900 miles) from Rio, of what could be part of the continent that was submerged when the Atlantic Ocean was formed as Africa and South America drifted apart 100 ...
Earth Sciences
May 7, 2013
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Scientists have long observed that species seem to have become increasingly capable of evolving in response to changes in the environment. But computer science researchers now say that the popular explanation of competition ...
Evolution
Apr 26, 2013
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(Phys.org) —Nature is a lot more resilient than we sometimes think. A study by Rutgers marine scientists published recently in Science shows that species of fish that have been overfished for decades can often be brought ...
Ecology
Apr 18, 2013
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The recipe and process for preparing Maya Blue, a highly-resistant pigment used for centuries in Mesoamerica, were lost. We know that the ingredients are a plant dye, indigo, and a type of clay known as palygorskite, but ...
Materials Science
Apr 2, 2013
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(Phys.org) —Miles below the ocean surface, diverse ecosystems flourish at hydrothermal vents. Without sunlight, animals live off of bacteria that thrive on chemicals billowing out of the Earth's crust. These strange communities ...
Earth Sciences
Apr 1, 2013
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A research coordinated by the scientists at SISSA of Trieste has now developed and studied a numeric model of the chromosome that supports the experimental data and provides a hypothesis on the bundle's function.
Cell & Microbiology
Mar 29, 2013
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New information about the extent of the 1872 Owens Valley earthquake rupture, which occurs in an area with many small and discontinuous faults, may support a hypothesis proposed by other workers that these types of quakes ...
Earth Sciences
Mar 20, 2013
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