When To Reproduce? It's All In The Timing
...mechanical response to pushing, bending, something like that, butthis is chemical sensing," Brawley says. "What I expect is that external fertilization is going to be found to bevery successful in these organisms. The caveat is that we always have toremember that we're looking at a snapshot of evo...Phase Out Planned For One Of Top Five U.S. Pesticides, Plant Doctors Respond
...st. Without the good work agricultural scientists, like plantpathologists, are putting into finding and implementing alternativepest control tools, the loss of methyl bromide could have a fargreater impact on growers, shippers, retailers and consumers,than I believe it ultimately will." A recent article ...Females' Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
...pping," is a rapid series ofloud clicks that sound like a Geiger counter exposed to a lode of uranium. It...because it does mimic thesound, which is something like a Geiger counter." Professor Kelley had already shown that the Xenopus male's brain andmale ...Jefferson Researchers First To Create Genetically Engineered Mouse To Study Photoaging
...bing UVB rays, but other formsof ultraviolet light like UVA, that can also contribute to skin aging and sk...y sunscreen. New vehiclesfor studying photoaging, like the transgenic mouse, can only lead us in thedirection of more protective sunscreens." In ph...Genetics May Explain Much Age-Related Hearing Loss
..., Ph.D., a researcher in the study group, "because like humans, theylose hearing at high frequencies first, while hearing loss in most other animalsbegins in the lower frequencies." In one study, the researchers measured auditory sensory-cell loss inmice that were young (2 months), middle-aged (7 ...Molecular Mechanochemistry: An Emerging Discipline At The Nexus Of Biology And Physics
...ic lesions. "Eddies form atarterial branches--much like when a river branches--and that's where arteriallesions develop, leading to heart attack and stroke," explains Davies. Hisresearch team has exposed endothelial cells in culture to fluid conditions muchlike vessel-branch vortices to better understand ......ey assembled smallparticles of matter into a wire, like masons cementing bricks into a wall. To doit, they harnessed the remarkable information-carrying properties of DNA,deoxyribonucleic acid. DNA, the stuff of genes, stores the information cells need to live andreproduce. But to nanoengineers, D...Lactose-Intolerant People Should Drink More Milk, Expert Says
... having to drink the milk -- they said they didn't like the milk and that they were intolerant. When we tested them they had only a very modest level of symptoms, though -- almost incidental. Two weeks later, after they had been consuming a dairy-based, high-calcium diet, we tested them again. Every one o...Leftover Fetal Cells May Affect Development Of Scleroderma
...e themother's immune system interactions, somewhat like a computer virus disruptingthe workings of a compu...hands, causing it to become shiny, tight and thick like leather. In contrast, the systemic form, which can lead to premature death, attacks theskin as well...Hormones Found In The Brain May Determine How Much You Eat And Affect Obesity And Diabetes
...t off. "The brain is doing a lot of things like a black box indealing with all this information," Yanagisawa said. Part of thisbiochemical process involves maintaining equilibrium between foodconsumption and energy expenditure. This helps determine whethersomeone becomes obese and/or develops adul...Drivers Should Pay More Of Environmental Costs, Report Says
...ay a lot more for things related to automobile use like gasoline, tolls and parking before they will agree to change their behavior," says Professor Richard Soberman, co-author of the report Full Cost Pricing and Sustainable Urban Transportation. Using the Greater Toronto Area as a case study, Soberman a...Study Shows: Just Say NO To Bone Loss
...asts in the bone remodeling process. This is much like theerosion/deposition process of a river bank wher...s giveth; the osteoclasts taketh away.Osteoclasts, like NO, are dual-natured. While they quite literally eat holesin bones, in their absence, bone marrow ...Women Can Inherit Drinking Problem Too, Study Finds
...th alcoholism, such as childhood behavior problems like lying andstealing or depression, were as strongly associated with risk of alcoholism inwomen as in men. "It used to be believed that depression predicted increased risk of alcoholproblems in women, whereas a history of childhood behavior problems pr...Wistar Scientists Identify New Tumor Suppressor Gene For Breast And Lung Cancer
... The Wistar investigators have also learned that, like BRCA1, the BAP1 gene is acancer gene. Mutations o...enes that contribute to the development ofdiseases like breast, lung and prostate cancer. Wistar is a National CancerInstitute Cancer Center....PEBBLEs Help U-M Scientists Open A Window On Cell Chemistry
...ish. "The PEBBLEs blast through the cell membrane like bullets," Clark explains, "but because they are so small, they rarely do any damage. Mortality of cells shot with PEBBLEs is only 2 percent higher than in control cells." Martin A. Philbert , U-M assistant professor of toxicology in the Sch...3-D Structure of Human Tumor-Suppressor Protein Produced
...tment of cancer, which is the ultimate goal ofwork like this. “Determining the structure of the prot...otein alone,” saidTsai. “Next, we’d like to know how p16 interacts with its targetmolecule in the cell.” That target is a second protein...Food Bacteria-Spice Survey Shows Why Some Cultures Like It Hot
...hot than in cold climates. Accordingly, countries like Thailand, the Philippines, India and Malaysia are ...an says, "and there are better ways tocool down -- like moving into the shade." The idea that people use spices todisguise the taste of spoiled food, he sa...Intake Of Acetaminophen Increases Risk Of Excessive Anticoagulation In Patients Taking Warfarin
... aspirin and non-steroidal anti-inflammatory drugs like ibuprofen cancause gastric bleeding. Warfarin is a blood-thinning drug taken by millions of people with a heartcondition called atrial fibrillation to prevent the development of blood clotsthat could cause strokes. It also is taken to prevent clot...