Origins, spread of honeybees determined
... such as the honeybee, are on the decline, and one reason is the encroachment of the Africanized bee into the U.S. According to the report, in order to bear fruit, three-quarters of all flowering plants rely on pollinators for fertilization. For example, in California alone, it takes about 1.4 million colon...American research finds twins more likely to have premature menopause
...d were similar in both the national registers. The reason that the association between twins and POF has been largely overlooked up to now is probably because POF is still uncommon, even in twins, (3 to 5 in a hundred)," said Dr Gosden. He said the surprising finding was that POF was just as common in non...Women's skin tone influences perception of beauty, health and age
...lly influences skin tone, giving women yet another reason to prevent future UV-related skin damage or try to correct past sun damage." The researchers said that tone variances could be caused by several factors including cumulative UV damage (freckles, moles, age spots), natural aging (yellowing, dullness...Disappearing nest egg: Researcher studying declining numbers of macaws
...r beauty, which is almost a curse for them and one reason why they are so highly prized. But surprisingly l...acaw research project. He has learned that one reason the macaw populations are declining is due to the popularity of the Aguaje palm. It's highly-sought...Temperament linked to onset of cancer and early death in female rats
... a variety of diseases, they could not establish a reason for the differences. The new study links personality specifically with cancer....Long-term ocean data confirm fishing puts species in 'double jeopardy'
...f North America. The scientists believe that the reason fished populations become more variable is because fishing selectively culls the larger, older individuals, thereby removing the fish that are more able to buffer random environmental variation. These individuals also tend to be the most reproductive...How brain injury leads to seizures, memory problems
... activity, in turn, is thought to be an underlying reason for seizures and memory defects experienced by people who have suffered a traumatic brain injury (TBI). "A traumatic brain injury occurs to someone in the United States every 23 seconds," said study team leader Akiva S. Cohen, Ph.D., of The Childre...Bacteria increase risk of lower stomach cancer, decreases risk of upper
...ri infections during the past century may be one reason that scientists have observed increasing rates of cardia and decreasing rates of noncardia gastric cancers in Western countries. "The results of this study suggest that caution may be warranted against mass treatment to eradicate H. pylori ," th...UVa researchers seek to unlock broccoli's cancer fighting secret
... we can determine that this specific enzyme is the reason the compounds in broccoli work to prevent cancer, then these nutrients or similar chemicals could be turned into anti-cancer compounds," she says. The incorporation of these compounds into a cancer prevention treatment that comes in a pill or liquid...Listening to the sound of skin cancer
...es in the blood is an unmistakable sign. "The only reason there could be melanin in the human blood is that there would be melanoma cells," he said. This new blood test would allow for a much more timely diagnosis of metastasis and with early diagnosis comes early treatment and increased likelihood for su...Prescription pain medication abuse on surprising increase, with unexpected geographic distribution
...own specific pattern," Moric said. "It is for this reason that PPM abuse must be monitored separately from other illicit substances, and the most commonly abused or most problematic PPMs should be monitored individually." Oxycodone, in particular, was singled out by Moric's group because of its highly add...Research could lead to new treatments for birth defects
...rder some time ago but we have now established the reason for the anomalies," said Dr Jill Dixon. "Working with a mouse model, we found that the craniofacial disorders are caused by the high number of cells, known as neural crest cells, that die before they have migrated to form the bone, cartilage and co......se the visibility of the Program. This is the main reason I had no hesitation to agree to chair the Editorial Advisory Council of the HFSP Journal. " The first articles will appear online in December 2006 and the first issue will be published in March 2007....Patchwork strategies may be best for restoring Texas rangelands
...said. Thesecontinuous disturbances are the primary reason for woody plantencroachment, ecological degradation and loss of plant diversity. "Rangeland restoration has traditionally been based on chemical,mechanical and/or fire techniques applied to an entire pasture atinfrequent intervals," he said. "The...Giant insects might reign if only there was more oxygen in the air
...ygen flow by closing their spiracles. In fact, one reason insects are so hardy is that they can close their spiracles and live off the oxygen they already have in their tracheae. Kaiser recalled a caterpillar that fell into a bucket of water in his lab. When the creature was discovered the next day, lab wor...Histamine tied to changes in blood pressure during exercise-recovery period
...ssure and low blood flow to the brain. "There is reason to believe that histamine is the primary vasodilator contributing to post-exercise hypotension, but we cannot say for certain," cautioned principal investigator John R. Halliwill, a professor of human physiology. "Some people have problems regulating...Leveling the field for babies with persistent pulmonary hypertension
...ive stress. This phosphodiesterase increase is the reason Viagra, a phosphodiesterase inhibitor, is used for these babies. Now that they better understand the complex scenario, Dr. Black and his colleagues want to look at the plasma of mothers and babies with persistent pulmonary hypertension for biomarker...Uncovering DNA's 'sweet' secret
...bbon"than the tightly twisted ladder of DNA. "The reason that DNA was 'picked' is not because it's thermodynamicallyextremely stable," Egli said. "There are others - including homo-DNA -that are actually superior in that regard." Egli's structure also shows that homo-DNA has more flexibility in howthe bas...One-of-a-kind imaging probe reveals secrets useful for drug discovery
... improve the properties of the spray or some other reason we haven't yet considered. It's the kind of thing that may provide hints about drug discovery in future." More than 40 years ago, Jerrold Meinwald, Ph.D., an emeritus professor of chemistry and chemical biology at Cornell University, led landmark ch...Preventive ovary removal linked to early death in younger women
...quires removal, however, there is still compelling reason to remove the ovaries for treatment. Removal should also be considered in older women and in women with a very high risk of ovarian cancer, he says. In their study, Dr Rocca and colleagues followed up 1293 women who had undergone removal of one ovar...