Russian Queens Bee-Little Mites' Impact
... many mites infested the adults and pupae. From previous data on U.S. colonies, "we would have expected an 11.4-fold increase in mites during the test period," Rinderer says. Instead "we got an average 3.9-fold increase—and many colonies had no increase. This is extremely exciting." Though many ...Genetically-Altered Crops Can Produce Tough, Hard-To-Kill Weeds
...p plantsinto the weed population. In fact, previous studies have shown that oilseed rape pollen can reachweeds nearly one mile away. "If farmers spray their crops with the same herbicide every year, theonly weeds to survive will be the ones with the transgenes -- and then thetransgenes will sp...University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions
... of major, physicalchanges to habitats." In fact, previous research reported by Miller and others on the OrdovicianPeriod showed thatdiversification of certain groups was favored in areas where activemountain-building took place. As for those who argue that mass extinctions are actually minor contributors t...Magnesium Supplements May Help Lower High Blood Pressure
...e findings should clarifyinconsistent results from previous investigations of magnesium and bloodpressure. Some results have indicated that magnesium helps lower blood pressurewhile others haven't. Japanese researchers say magnesium may play a role in relaxing the bloodvessels, an effect generally pr......s are the most well-known links to breastcancer, a previous study showed that the APC gene mutation was linked to anincreased risk of developing colon cancer. In that study, published in theSeptember 1997 issue of Nature Genetics, some of the individuals with coloncancer also had a family history of breast c......es to pass them on to offspring. And finally, many previous studieshave focused largely on observable appearance and how it relates to femalechoosiness or male attractiveness. "We attempted to avoid each of these potential pitfalls by using anartificial selection approach in which we varied levels of ......f p27 were more aggressive. "Our study reinforces previous research that suggests that prostate cancer candev...ancer," said Dr. Scher. The research built on the previous work of the study's co-authors, Dr. JoanMassagu and Dr. Andrew Koff of the Molecular Biology Program......se. The findings resolvecontradictory results from previous research on the connection betweenmethylation and cancer. "One of the earliest hallmarks of cancer is the decreased stability ofthe cellular DNA, which causes genome rearrangements and mutations and sets thestage for the cell to develop mal...International Study Finds Mothers' Lifetime Lead Exposures May Put Breast-Fed Newborns At Risk
..., industrial sources andleaded gasoline." While previous research had demonstrated that lead is stored in bones,scientists could not quantify its release into the blood and other bodilyfluids. To answer that question, the researchers compared second-generationAustralian women with women who had migrated to......ein is called Tristetraprolin, or TTP. In previous experiments, the researchers found that mice geneticallymodified to remove the TTP gene suffer many ailments similar to those associatedwith overproduction of TNF in people; yet when TNF is controlled in the mice,most of the TNF-induced problems do n...Hyperforin Is A Key To St. John's Wort, Researchers Say
...for Better Health (Interweave Press 1997). "While previous clinical studies have shown St. John's Wort is effective,questions remained about the identity of the active component and how it relatesto efficacy. These studies on the extract in MOVANA™ help answer thosequestions." The yellow-flowere...UD Education News: HHMI Award Supports Undergraduate Discovery
... quiz, questioning them about a story he told in a previous PBLlesson. "How old was Albert Szent-Gyorgyi when he died?" White asks. "Was he 93?" a student responds immediately. White nods, smiling. "Why did he win the Nobel Prize?" "Vitamin C," someone else responds, correctly. "Where and when did I meet him?...Computer Simulation To Predict Forest Fires
...rge fire ensued. The scientists say that the only previous application of this type of model was to study measles epidemics in isolated populations. The scientists ran the model under different scenarios of forest density. Interestingly, for each scenario, the researchers found a range of small to large f...40 Percent Of Deaths Are Environmental
...r Disease Control and Prevention (CDC), as well as previous studies at Cornell and other universities. Their findings span a planet made less habitable by human habitation: -- Each year, air pollutants adversely affect the health of 4 to 5 billion people worldwide. An expanding world population is burning ...Antioxidant Treatment Holds Promise For Combating Malnourishment
... GSH can protect the body from freeradical damage, previous research showed thatsupplementation of GSH itself is not effective. The keyto Bray's research was giving rats supplements of OTC(L-2-Oxothiazolidine-4-Carboxylate), a precursor thatthe body uses to create GSH. The body is able to take OTC tothe lungs...Ribozymes Come Ready For Action
..., shows that crystallizing RNA is feasible despite previous doubtsthat RNA might be too "floppy" to crystallize well. "There are a lot of RNAs outthere that are of biological interest, and I think this will be an incentive formore people to work on RNA crystallography," says Cech....Lake George Water Is Death On Zebra Mussel Larvae
... Zebra Mussel Larvae Have Been Found in the LakeIn previous years, zebra mussel larvae, called veligers, have been found in LakeGeorge by the DFWI's zebra mussel research team that includes Marc Frischer,assistant professor at Skidaway Institute of Oceanography in Savannah, Ga. Butno adult zebra mussels have ...Stress Hormone Levels Predict Length Of Gestation In Human Pregnancy
... into maternal andfetal circulatory systems. In previous studies, elevated levels of maternal CRH have been associated with the presence of medical complications in pregnancy andwith preterm labor. It was not clear, however, whether CRH was a marker ofcomplications or whether the CRH played a role in infl...... stakeholders' interests, and lessons learned from previous wolfrecovery programs. Registration fees are: $50 for members of the American Museum of NaturalHistory and the Hastings Center, $60 for non-members. Box Lunches areavailable: $12 each, please specify which day/s. To register, contact Janet Bowe...