Research discovers oldest bee, evolutionary link
...that resemble wasps, such as a double spine on the middle tibia and narrow hind legs. But it also has branched hairs all over its body and other key features characteristic of pollen-spreading bees. This species, named Melittosphex burmensis, is long extinct. "In archaeology, a lot of people look at the spe...Pulmonary hypertension discriminates by race, gender
...description of the condition as being a disease of middle aged, Caucasian women." Pulmonary arterial hypertension is a rare disorder that affects the blood vessels within the lungs and leads to an increase in the pressure within the pulmonary arteries. This can lead to symptoms, such as unexplained shortnes...Always keeping a safe distance
...1 is a well-researched example, consist of a head, middle section and tail. They are considerably smaller than their transport rails. Whether kinesin-1 is transporting individual cell organelles or other cargo, its head section moves forward step by step on a microtubule - the length of the step and the p...Temperament linked to onset of cancer and early death in female rats
...the environment. They found that by age 390 days, middle age for rats, 80 percent of the fearful rats had m...thood, and then became differentiated again during middle age with the fearful rats having irregular cycles more often. The aging affects on reproduction were...USC groups present at Neuroscience 2006
...hborhood outreach effort that reaches nearly 1,000 middle and high school students every year and brings many of them into the university's laboratories for hands-on internships (www.usc.edu/hsc/USCSTAR). A "very excited and very grateful" Brinton thanked USC's Good Neighbors program, which she said "has ...Story tips from the Department of Energy's Oak Ridge National Laboratory, October 2006
...arry 20 percent more passengers could debut by the middle of next year. At the heart of the bus is an ultra-high-strength stainless steel body and chassis that would actually be up to 30 percent less expensive to build than the standard bus body. ORNL researchers are helping develop the lightweight structur...NIH director announces 2007 Pioneer Award competition
...omedical research, and individuals in the early to middle stages of their careers," said Jeremy M. Berg, Ph.D., director of the National Institute of General Medical Sciences and a leader of the Pioneer Award program. The centerpiece of the streamlined, electronic application process is an essay on the inv...Embryo fossils reveal animal complexity 10 million years before Cambrian Explosion
...ot observe a blastocoel, a fluid-filled gap in the middle of the embryo and a common feature among modern animal embryos. Raff said there are two likely explanations for the observation: "Either these embryos are primitive and don't have a clear blastocoel, or a blastocoel existed but didn't survive the pre...Updated Iraq survey affirms earlier mortality estimates
...bat, terrorism, criminal activity or caught in the middle of the conflict. The study outlines other limitations of the survey method, including the hazards of collecting data during a conflict. The results from the new study closely match the finding of the group's October 2004 mortality survey. The earli...Train your brain to hear your friends at a party
... Our ability to detect a particular sound in the middle of lots of noise relies on the fact that we have two ears, and each detects an individual sound at a slightly different time (a sound coming from the left will reach the left ear slightly faster than it reaches the right ear). This is known as binaur...Rutgers-led group lands $2.55 million to advance high school biology and math
...ving math and science education in the elementary, middle and high school grades for years. The NSF grant will fund development of instructional modules that can be used in high school biology and mathematics courses without having to change the curriculum. Teams of teachers, writers and content experts wi...Highlights from the October 2006 Journal of the American Dietetic Association
...staurants of nearly 1,500 students in 10 different middle schools. According to the study, 71 percent of the students reported purchasing sugar-sweetened beverages (either a sweetened drink or a non-diet soda), including 68 percent who bought one to three vending machine items, and 79 percent who bought fou...When nerve cells can't make contact
...in the film "Rain Man", are rare. Even up to the middle of the last century, exceptionally cold emotional behaviour on the part of the mother was given as the cause for autism. However, the "refrigerator mom" theory has now been refuted. The belief widely held in the 1990s that the measles, mumps and rube...Dinosaurs' climate shifted too, reports show
...hing grander. "We had virtually no data from the middle of the largest ocean at that time period," Brassell said. "The data we collected suggest significant global fluctuations in temperature." As part of the National Science Foundation's Ocean Drilling Project, the geoscientists voyaged in 2001 to Shat...A new understanding of how cells defend themselves against bacterial pore-forming toxins
...fections, Streptococcus pneumonie, responsible for middle ear infections and pneumonia, and Helicobacter pylori, implicated in ulcers. Pore-forming toxins compose about a quarter of all known protein toxins that increase the infectivity and severity of bacterial diseases. Once the toxin perforates the h...Cassini's Visual and Infrared Mapping Spectrometer detects vast polar ethane cloud on Titan
...lack of liquid ethane oceans and clouds at Titan's middle and lower latitudes." "We think that ethane is raining or, if temperatures are cool enough, snowing on the north pole right now. When the seasons switch, we expect ethane to condense at the south pole during its winter," Griffith said. If polar con...Chemical tests of cell growth enter third dimension
...n only growth medium. The 3D glob of cells in the middle well glows brighter than a 2D film, due to a speci...t empty wells supply nutrients to the cells in the middle well, so tests can run for up to two weeks without researchers having to replenish the growth medium...Replacing insulin is top-ranked breakthrough foreseen for health in developing world
...al deficiencies combined. The authors say low and middle income countries as a group report 80% of all chronic disease deaths, over 95% of deaths due to infectious disease, and almost 90% of deaths due to injury and trauma. Even though developing countries suffer more than developed countries from the m...An artificial cornea is in sight, thanks to biomimetic hydrogels
...ers--a top layer of protective epithelial cells, a middle layer called stroma that provides the collagen matrix that gives the cornea its shape, and an innermost endothelial layer. With inlays, some of the epithelial layer can be scraped away and replaced with a hydrogel contact lens. The lens becomes bioin......ult females and young occupying the more protected middle positions. The positioning of dominant and bolder individuals, in particular the alpha male, was found to change depending on both the degree of risk and number of adult males present, suggesting that dominant individuals act cooperatively, and with ...