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Plants discover the benefits of good neighbors in strategy against herbivores

http://www.sciencedaily.com

Scandinavian scientists have discovered that a species of tree defends itself from herbivore attack by using chemicals emitted by neighboring plants. The study reveals how species of Birch tree absorb chemical compounds from neighboring Marsh tea plants, Rhondodendron tomentosum, in a unique "defense by neighbor strategy."

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14 min 16 sec ago
Category: Biology   Tags:
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Hidden habits and movements of insect pests revealed by DNA barcoding

http://www.eurekalert.org

(University of Minnesota) University of Minnesota researcher George Weiblen and colleagues have found a faster way to study the spread and diet of insect pests. Using a technique called DNA barcoding, which involves the identification of species from a short DNA sequence, Weiblen and an international team of researchers studied populations of numerous moth and butterfly species across Papua New Guinea. DNA barcodes showed that migratory patterns and caterpillar diets are very dynamic.

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14 min 38 sec ago
Category: Biology   Tags:
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'The Rosenfeld' named after California's godfather of energy efficiency

http://www.eurekalert.org

(DOE/Lawrence Berkeley National Laboratory) A group of scientists propose today in a refereed article in Environmental Research Letters to define the Rosenfeld as a unit for electricity savings, after the man seen by many people as the godfather of energy efficiency, Arthur Rosenfeld.

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15 min 6 sec ago
Category: Chemistry   Tags:
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Studies that compare effectiveness of medications often do not include nonpharmacologic therapies

http://www.eurekalert.org

(JAMA and Archives Journals) An analysis of comparative effectiveness studies finds that few compare medications with nonpharmacologic interventions, and few examine safety or cost-effectiveness, according to a study in the March 10 issue of JAMA.

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15 min 14 sec ago
Category: Chemistry   Tags:
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Decoding the long calls of the orangutan

http://www.sciencedaily.com

Research into the long calls of male orangutans in Borneo has given scientists new insight into how these solitary apes communicate through dense jungle. An acoustic analysis of the calls reveals that the calls not only serve to attract females, but also contain information on the identity and the context of the caller.

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15 min 23 sec ago
Category: Biology   Tags:
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Sources of pollution in waterways

http://www.eurekalert.org

(American Society of Agronomy) A new study reviews the possible sources of Polycyclic aromatic hydrocarbons (PAHs) pollution to the New York/New Jersey Harbor.

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15 min 33 sec ago
Category: Biology   Tags:
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Dome away from home

http://www.eurekalert.org

(National Science Foundation) After more than three decades of service to researchers and staff stationed at the bottom of the world, the dome at the Amundsen-Scott South Pole Station was deconstructed this austral summer.

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15 min 35 sec ago
Category: Chemistry   Tags:
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Patients with Irritable Bowel Syndrome not more likely to develop polyps, colon cancer

http://www.eurekalert.org

(University of Michigan Health System) Patients with irritable bowel syndrome are at no greater risk of having polyps, colon cancer or inflammatory bowel diseases than healthy people undergoing colonoscopies.

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15 min 36 sec ago
Category: Biology   Tags:
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Behavioral problems in childhood doubles the risk of chronic widespread pain in adult life

http://www.eurekalert.org

(Oxford University Press) Bad behavior in childhood is associated with long-term, chronic widespread pain in adult life, according to the findings of a study following nearly 20,000 people from birth in 1958 to the present day. The research, published online in the journal Rheumatology on Wednesday March 10, found that children with severe behavior disturbances had approximately double the risk of chronic widespread pain by the time they reached the age of 45 than children who did not have behavior problems.

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15 min 45 sec ago
Category: Biology   Tags:
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Papaya extract thwarts growth of cancer cells in lab tests

http://www.eurekalert.org

(University of Florida) Papaya extract seems to have a toxic effect on cancer cells in culture, suggesting a potential treatment. Scientists documented for the first time that papaya leaf extract boosts the production of key signaling molecules called Th1-type cytokines. This regulation of the immune system, in addition to papaya's direct anti-tumor effect on various cancers, suggests possible therapeutic strategies that use the immune system to fight cancers.

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15 min 49 sec ago
Category: Biology   Tags:

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