Bones of Crocodile-like Beasts Tell Tale of Global Warming
... to survive and reproduce.Based on the numbers and sizes of the animals found, the team estimates that theannual mean temperature in the Arctic during the late Cretaceous period, fromabout 92 to 86 million years ago, was about 57 degrees Fahrenheit. That means itwas rarely if ever freezing during the winte...How Super Are The "Super Aspirins"? -- New COX-2 Inhibitors May Elevate Cardiovascular Risk
...hly an order ofmagnitude too small in their sample sizes to detect what we see as a possibleproblem associated with the use of these drugs. So, the question hangs out therefor future experience: Will a cardiovascular risk emerge over time as the COX-2inhibitors reach more and more patients?" Aspiri......ements to estimate opticaldepths in clouds and the sizes of aerosol droplets. The Maldives archipelago runs in a north-south line from about 500 milessouthwest of the tip of the Indian subcontinent to the equator. Thepersonnel and observing systems are spread across several islands, withall transport by bo...Controlling Problem Snakes: Saipan Benefits From USGS Research
...ousehold pet. Because these snakes can reach large sizes (up to 10 ft. and 5 lbs.) and aremildly venomous, they also pose a potential threat to the health and safety ofhumans. Though the snake is not known to be fatal to humans, scientists warnthat infants and small children can be seriously injured by bro...Artificial Gels Could Speed DNA Sequencing
...tificial gels are forests of vertical pillars with sizes down to 100 nanometers (nm) thick and 100 nm apart...asure the velocity with which molecules of varying sizes move and compare the results with theoretical predictions. He is conducting tests over a range of d......ns of smallparticles, also known as aerosols, with sizes mostly less than a few micrometersin diameter. The haze particles are primarily composed of soot, sulfates,nitrates, organic particles, fly ash and mineral dust. Because of thispollution, visibility over the open ocean was often under 10 km, a range ...In Animal Groups, Scientists See Patterns That Could Predict The Future
...ands of birds were simply too few toform the flock sizes needed for the species to survive, she says. Documenting how animal groups behave allows computer models to predict what willhappen under various conditions in the future. A school of fish, for instance,can sense the approach of a predator and take e...New Coating Process May Prevent Body From Rejecting Medical Implants
...ner says. Tests were done using proteins ofsimilar sizes and only the protein with the appropriate shape and chemistryadhered to the coating. One of the proteins to be tested next is osteopontin. UW bioengineeringprofessor Cecilia Giachelli discovered osteopontin plays a critical role inpreventing...Evolutionary genetic tools trace cancer clone lines
... if the new analysis is correct, reductions in the sizes of polyps mayreflect efficacy against the adenoma dead-ends and not in the extinction of theactual cancer lineage. Shibata began the research after reading about work in computational biology andthinking that the techniques might be applicable to onc...Home owners may sleep better because student overcame her fear of insects
...ig a particle an ant can eat, we fed themdifferent sizes of florescent beads so we could see how small it had to be topass through their digestive system. We found they can filter particles down toa micron, which is very small," explains Fell. Carpenter ants do not eat the wood they carve up. "We learned ...Discovery of oldest dinosaur bones reported in Science
... mammals,many of which then evolved to much larger sizes once again, following theextinction of the dinosaurs. The paleontologists also expect that their find will provide clues abouthow the breakup of the supercontinent Pangaea, which began in the Triassic,affected the course of evolution. ...New dinosaurs appear to be oldest yet, as reported in the 22 October issue of Science
... mammals,many of which then evolved to much larger sizes once again, following theextinction of the dinosaurs. "The new fossils will help us tease thatevolutionary transformation apart," said Flynn. The paleontologists also expect that their find will provide clues as to how thebreakup of the supercontinen...Researchers use 'voice recognition' program to count bats
... polyurethane tubing to simulate variousshapes and sizes of blockages in arteries. Fluid was pumped through the tubing to simulate typical bloodflow. Doppler ultrasound was used to track the amount of turbulence in the "blood" flow just past theblockage. Turbulence results from fluid instabilities generat...UC researchers use Doppler ultrasound
... polyurethane tubing to simulate variousshapes and sizes of blockages in arteries. Fluid was pumped through the tubing to simulate typical bloodflow. Doppler ultrasound was used to track the amount of turbulence in the "blood" flow just past theblockage. Turbulence results from fluid instabilities generat...Exposures to second-hand smoke lower than believed, ORNL study finds
...ople employed at restaurants or taverns of varying sizes in the Knoxville area, concluded that exposures to respirable suspended particulate matter (RSP), for example, were considerably below limits established by the Occupational Safety and Health Administration (OSHA) for the workplace. Subjects, who we...Stream size major factor in nitrogen reaching the Gulf of Mexico
...cation of nitrogen sources to streams of different sizes in the watershed. The study finds that the rates of nitrogen reaching the Gulf from upstream areas near large rivers in such states as Ohio and Minnesota are much higher than those in neighboring areas near small streams. Moreover, areas near larg...New Science study revisits the debate over bird parents, predators, and family planning
...e has fueled an ongoing debate over whether clutch sizes are limited mostly by food supply, by predators, o...o their young faster. But, they had smaller clutch sizes in comparison with the Arizona bird mothers. According to the Skutch hypothesis, researchers should ...Extinction-prone sunfish and suckers identified
.... The guide also contains the information on body sizes and habitat that Pyron used. The 13 species of sunfish and suckers identified as extinction prone in Pyron's study: SUNFISH Roanoke Bass -- found in Virginia and North Carolina. Ozark Rock Bass -- found only in Arkansas and Southern Missouri....Fragmented Forest, Fragmented Food
... of food available to these birds in the different sizes of forest plots, to see if food would make any difference to the birds' ability to successfully reproduce. The results of their study appear in this month's Ecology (volume 81 issue 6) , a journal published by the Ecological Society of America. Yell...Fuel cell research center to develop and test new technologies
...s at any given time, and development of new types, sizes and configurations of batteries to run cars and other devices. Georgia Tech's center will focus on fuel cell and battery technology for wireless telecommunications, ultra-low emission vehicles and distributed stationary power supplies. The new center...