ScienceDaily Environment Headlines
for Saturday, February 13, 2010
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Human gait adapted for efficient walking at the cost of efficient running (February 12, 2010) -- Humans, other great apes and bears are among the few animals that step first on the heel when walking, and then roll onto the ball of the foot and toes. Now, a new study shows the advantage: Compared with heel-first walking, it takes 53 percent more energy to walk on the balls of your feet, and 83 percent more energy to walk on your toes. ... > full story
Herbal medicines can be lethal, pathologist warns (February 12, 2010) -- A forensic pathologist has sounded a worldwide warning of the potential lethal dangers of herbal medicines if taken in large quantities, injected, or combined with prescription drugs. ... > full story
Cholera and related diseases: Grasping bacterial 'friending' paves the way to disrupt biofilm creation (February 12, 2010) -- Finding a biological mechanism much like an online social network, scientists have identified the bacterial protein VpsT as the master regulator in Vibrio, the cause of cholera and other enteric diseases. This discovery provides a major tool to combat enteric disease. ... > full story
Dramatic changes in agriculture needed as world warms and grows (February 12, 2010) -- Scientists are urging dramatically changed ideas about sustainable agriculture to prevent a major starvation catastrophe by the end of this century among more than 3 billion people who live in the tropics. ... > full story
Toads anticipate the timing and impact of their landings (February 12, 2010) -- Humans may not have a leg up on toads, at least not when it comes to jumping and landing, according to new research. Researchers shows that toads, like humans, are capable of anticipating when and how hard they're going to land after a jump and activating muscles important in absorbing impact accordingly. ... > full story
How cholera bacteria becomes infectious (February 12, 2010) -- Researchers have described the structure of a protein called ToxT that controls the virulent nature of Vibrio cholerae, the bacteria that causes cholera. Buried within ToxT, the researchers were surprised to find a fatty acid that appears to inhibit ToxT, which prevents the bacteria from causing cholera. ... > full story
Universal DNA reader will advance faster, cheaper sequencing efforts (February 12, 2010) -- Scientists have come up with a new twist in their efforts to develop a faster and cheaper way to read the DNA genetic code. They have developed the first, versatile DNA reader that can discriminate between DNA's four core chemical components -- the key to unlocking the vital code behind human heredity and health. ... > full story
Antarctic ice shelf collapse possibly triggered by ocean waves (February 12, 2010) -- Extremely long waves could have initiated 2008 collapse events. Depicting a cause-and-effect scenario that spans thousands of miles, scientists discovered that ocean waves originating along the Pacific coasts of North and South America impact Antarctic ice shelves and could play a role in their catastrophic collapse. ... > full story
Antibiotics as active mutagens in the emergence of multidrug resistance (February 12, 2010) -- Multidrug resistant bacteria such as Methicillin-resistant Staphylococcus aureus (MRSA) pose a major problem for patients, doctors, and the pharmaceutical industry. To combat such bacteria, it is critical to understand how resistance is developed in the first place. New research shows that low doses of antibiotics can produce mutant strains that are sensitive to the applied antibiotic but have cross-resistance to other antibiotics. ... > full story
Marshall Islands research could lead to resettlement after nuclear tests (February 12, 2010) -- Through Laboratory soil cleanup methods, residents of Bikini, Enjebi and Rongelap Islands -- where nuclear tests were conducted on the atolls and in the ocean surrounding them in the 1950s -- could have lower radioactive levels than the average background dose for residents in the United States and Europe. ... > full story
Chemists create synthetic 'gene-like' crystals for carbon dioxide capture (February 12, 2010) -- Chemists report creating a synthetic "gene," which could capture heat-trapping carbon dioxide emissions. Carbon dioxide contributes to global warming, rising sea levels and increased acidity of oceans. ... > full story
Dietary formula that maintains youthful function into old age (February 12, 2010) -- Researchers develop dietary formula that maintains youthful function into old age. ... > full story
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