Just as square dance partners join hands at a particular point in the music, so broken pieces of DNA in our cells reunite as they are repaired. Precisely and quickly, these DNA pieces identify each other and tether together. A tumor-suppressor gene called ATM choreographs this fast-paced, but reliable, reassembly operation.
Adult stem cells originate in a different part of the brain than is commonly believed, and with proper stimulation they can produce new brain cells to replace those lost to disease or injury, a new study has shown.
The nerve connections that keep a fly's gaze stable during complex aerial maneuvers, enabling it to respond quickly to obstacles in its flight path, have been revealed in new detail.
Just as square dance partners join hands at a particular point in the music, so broken pieces of DNA in our cells reunite as they are repaired. Precisely and quickly, these DNA pieces identify each other and tether together. A tumor-suppressor gene called ATM choreographs this fast-paced, but reliable, reassembly operation.
In science fiction stories it is either the inexhaustible energy source of the future or a superweapon of galactic magnitude: antimatter. In fact, antimatter can neither be found naturally in any abundance on Earth nor in space, is extremely complex to produce and thus difficult to study. In order to track down the origin of matter and antimatter in the universe, scientists are measuring the power of the electrical dipole moment of neutrons, which represents a measure for the different physical properties of matter and antimatter.
Parents who have regular meals with their adolescent children might help lessen the chances they will start drinking or smoking later in their teen years, according to new research. Researchers noted benefits in families that ate five or more meals together each week, and found that about 60 percent of the participants did so.
Apenas como los socios cuadrados de la danza ensamblan las manos en un
punto particular en la música, así que los pedazos rotos de DNA en
nuestras células júntese como se reparan. Exacto y rápidamente,
estos pedazos de la DNA se identifican y lo atan juntos. Un gene del
tumor-supresor llamado ATM choreographs esto ra'pido-establecida el
paso, pero confiable, operación del nuevo ensamble.
Biofilms develop on any surface that bacteria can attach themselves to. The dilemma we face is that neither disinfectants and antibiotics, nor phagocytes and our immune system can destroy these biofilms. Scientists have now identified one of the fundamental mechanisms used by the bacteria in biofilms to protect themselves against the attacking phagocytes.
Researchers have found that sorafenib (Nexavar) helps patients with advanced liver cancer live about 44 percent longer compared with patients who did not receive the anti-cancer drug. The findings are a significant advance in the management of liver cancer, which is the third cause of cancer death globally, often resulting in death within a year of diagnosis.
Geoscientists have come up with a new explanation for the formation of monsoons, proposing an overhaul of a theory about the cause of the seasonal pattern of heavy winds and rainfall that essentially had held firm for more than 300 years.
Rigid parenting appears to be linked to increased sexual activity in older teens. More than two of every three American teens has sexual intercourse before age 19. Although it is difficult to confirm that controlling mothers and fathers cause kids to have more sex, the findings suggest it is wise to give children freedom.
What causes the shimmering, ethereal Northern Lights to suddenly brighten and dance in a spectacular burst of colorful light and rapid movement? Space scientists have identified the mechanism that triggers substorms in space; wreaks havoc on satellites, power grids and communications systems; and leads to the explosive release of energy that causes the spectacular brightening of the aurora borealis, also known as the Northern Lights.
Scientists can now make the antifreeze protein that enables billions of Canadian snow fleas to survive frigid winter temperatures. Their laboratory-produced first-of-a-kind proteins could have practical uses in extending the storage life of donor organs and tissues for human transplantation, according to new research.
Soaring energy prices will yield sharp increases for corn and soybean production next year, cutting into farmers' profits and stretching already high food costs, according to a study. Costs to get crops in the ground will jump by about a third in 2009, fueled by fertilizer prices expected to surge 82 percent for corn and 117 percent for soybeans.
Male fruit flies missing a gene for one particular odor receptor become clueless in matters of love, scientists have discovered. Because they lack the ability to read important chemical cues, these flies will indiscriminately attempt to have sex with other males, and with females who have already mated. The signals they're missing are pheromones wafting from mated females and male flies.
The Arctic may contain as much as a fifth of the world's undiscovered yet recoverable oil and natural gas reserves Michael McCarthy The future of the Arctic will be less white wilderness, more black gold, a new ...
(AP) -- The plant has been described by local residents as magical, its qualities almost mythical. The native herb yerba mansa, translated from Spanish as the "calming herb," has been used medicinally for centuries throughout the Southwest by American Indians and Hispanics to treat ailments ranging from toothaches to sinus infections.
The biggest contribution UK couples can make to combating climate change would be to have only two children or at least have one less than they first intended, argues an editorial published on BMJ.com today.
Critical food shortages and growing demand for bio-fuels and hydro-electricity due to high fossil fuel prices rank among the greatest threats today to the preservation of precious wetlands worldwide as farmers and developers look for new areas for agriculture, energy crop plantations and hydro dams.
Dear EarthTalk: I was intrigued to hear that there were a number of ways one could modify or construct a roof on a house or office facility that would provide great environmental benefit. Can you enlighten? -- Bill Teague, Menlo Park, CA
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