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Sunday, April 24, 2011

ScienceDaily Environment Headlines -- for Sunday, April 24, 2011

ScienceDaily Environment Headlines

for Sunday, April 24, 2011

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Brown recluse spider: Range could expand in N. America with changing climate (April 23, 2011) -- One of the most feared spiders in North America -- the brown recluse -- is the subject a new study that aims to predict its distribution and how that distribution may be affected by climate changes. Researchers believe that the range may expand northward, potentially invading previously unaffected regions. Newly influenced areas may include parts of Nebraska, Minnesota, Wisconsin, Michigan, South Dakota, Ohio, and Pennsylvania. ... > full story

Starting a new metabolic path: New technique will help metabolic engineering (April 23, 2011) -- Researchers have demonstrated a new technique that speeds up and improves the identification and quantification of proteins within a cell or micoorganism. Called "targeted proteomics," the new technique is expected to be an important new tool for the fields of metabolic engineering and synthetic biology. ... > full story

How molecules get to the right place at the right time (April 23, 2011) -- Active transport processes in cells ensure that proteins with specialized local functions reach their intracellular destinations. Impaired transport causes cellular dysfunction or even cell death. Scientists have now revealed how such a transport complex recognizes its cargo and assembles. ... > full story

New approach to defeating flu shows promise (April 23, 2011) -- New research on mice has shown that pulmonary administration of granulocyte macrophage-colony stimulating factor (GM-CSF) significantly reduces flu symptoms and prevents death after a lethal dose influenza virus. While GM-SCF therapy for humans as a flu prophylaxis or treatment may be years away, the study results were striking: All of the mice treated with GM-SCF survived after being infected with the influenza virus, whereas untreated mice all died from the same infection. ... > full story

C. difficile colonization accompanied by changes in gut microbiota: Study hints at probiotics as treatment (April 23, 2011) -- Asymptomatic colonization by Clostridium difficile, absent the use of antibiotics, is common in infants and when it happens changes occur in the composition of the gut microbiota, according to new research. ... > full story

Democrats and Republicans increasingly divided over global warming, study finds (April 23, 2011) -- Despite the growing scientific consensus that global warming is real, Americans have become increasingly polarized on the environmental problem, according to a first-of-its-kind study. ... > full story

Parasite strategy offers insight to help tackle sleeping sickness (April 22, 2011) -- Fresh insight into the survival strategy of the parasite that causes sleeping sickness could help inform new treatments for the disease. ... > full story

Lawn of native grasses beats traditional lawn for lushness, weed resistance (April 22, 2011) -- A lawn of regionally native grasses would take less resources to maintain while providing as lush a carpet as a common turfgrass used in the South, according to a new study. ... > full story

Jurassic spider from China is largest fossil specimen discovered (April 22, 2011) -- With a leg span of more than five inches, a recently named Jurassic period spider from China is the largest fossil specimen discovered, and one that has modern relatives in tropical climates today. ... > full story

Clouds, clouds, burning bright (April 22, 2011) -- High up in the sky near the poles some 50 miles above the ground, silvery blue clouds sometimes appear, shining brightly in the night. These are noctilucent or "night shining" clouds. Since 2007, a NASA mission called Aeronomy of Ice in the Mesosphere (AIM) has shown that the cloud formation is changing year to year, a process they believe is intimately tied to the weather and climate of the whole globe. ... > full story

Photovoltaic systems boost the sales price of California homes (April 22, 2011) -- New research finds strong evidence that homes with solar photovoltaic (PV) systems sell for a premium over homes without solar systems. The research is the first to empirically explore the existence and magnitude of residential PV sales price impacts across a large number of homes and over a wide geographic area. ... > full story

Learning to tolerate our microbial self: Bacteria co-opt human immune cells for mutual benefit (April 22, 2011) -- The human gut is filled with 100 trillion symbiotic bacteria which we blissfully live with, although they have many features similar to infectious bacteria we react against. What decides whether we ignore -- or fight? In the case of a common "friendly" gut bacterium, Bacteroides fragilis, researchers have discovered the surprising answer: The decision is not made by us, but by the bacteria, which co-opt cells of the immune system for our benefit ... and theirs. ... > full story

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ScienceDaily Health Headlines -- for Sunday, April 24, 2011

ScienceDaily Health Headlines

for Sunday, April 24, 2011

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Liver-cell transplants show promise in reversing genetic disease affecting liver and lungs (April 23, 2011) -- Transplanting cells from healthy adult livers may work in treating a genetic liver-lung disorder that affects millions of people worldwide, according to a new animal study. ... > full story

Study adds weight to link between calcium supplements and heart problems (April 23, 2011) -- New research adds to mounting evidence that calcium supplements increase the risk of cardiovascular events, particularly heart attacks, in older women. ... > full story

For family violence among adolescents, mattering matters (April 23, 2011) -- Teens and adolescents who believe that they matter to their family -- that is, they feel the make a difference in the family's daily doings -- are significantly less likely to threaten or engage in family violence, according to a new study. ... > full story

Scientists engineer nanoscale vaults to encapsulate 'nanodisks' for drug delivery (April 23, 2011) -- The first steps toward the development of the vault nanoparticle into a versatile and effective DDS are reported in this paper. The ability to encapsulate therapeutic compounds into the vault is a critical and fundamental obstacle in their development for small-molecule drug delivery. Recombinant vaults are engineered to encapsulate the highly insoluble and toxic hydrophobic compound all-trans retinoic acid (ATRA) using a vault-binding lipoprotein complex that forms a lipid bilayer nanodisk. ... > full story

Frog embryos lead to new understanding of cardiac development (April 23, 2011) -- During embryonic development, cells migrate to their eventual location in the adult body plan and begin to differentiate into specific cell types. There is now new insight into how these processes regulate tissues formation in the heart. ... > full story

Functioning synapse created using carbon nanotubes: Devices might be used in brain prostheses or synthetic brains (April 22, 2011) -- Engineering researchers have made a significant breakthrough in the use of nanotechnologies for the construction of a synthetic brain. They have built a carbon nanotube synapse circuit whose behavior in tests reproduces the function of a neuron, the building block of the brain. ... > full story

Anti-depressants boost brain cells after injury in early studies (April 22, 2011) -- When neurosurgeons noticed that patients with brain injuries who had been prescribed anti-depressants were doing better in unexpected ways than their counterparts who were not taking such medications, scientists took a closer look. Early results in mice indicate that anti-depressants may help spur the creation and survival of new brain cells after brain injury. ... > full story

Worm studies shed light on human cancers (April 22, 2011) -- Research in the worm is shedding light on a protein associated with a number of different human cancers, and may point to a highly targeted way to treat them. ... > full story

Quality of parent-toddler relationship could affect risk for childhood obesity (April 22, 2011) -- Toddlers who do not have a secure emotional relationship with their parents, and particularly their mothers, could be at increased risk for obesity by age 4 and a half, according to new research. The study suggests that children at age 24 months who show insecure attachment patterns have at least 30 percent higher odds for obesity by age 4 and a half. ... > full story

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ScienceDaily Health Headlines -- for the Week of April 17 to April 24, 2011

ScienceDaily Health Headlines

for the Week of April 17 to April 24, 2011

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ScienceDaily Top Science Headlines -- for Sunday, April 24, 2011

ScienceDaily Top Science Headlines

for Sunday, April 24, 2011

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Large Hadron Collider sets world record beam intensity (April 23, 2011) -- CERN's Large Hadron Collider (LHC) has set a new world record for beam intensity at a hadron collider, exceeding the previous world record set by the US Fermi National Accelerator Laboratory's Tevatron collider in 2010, and marks an important milestone in LHC commissioning. ... > full story