Argentina
WASHINGTON -- A suite of five ancient crocs, including one with teeth like boar tusks and another with a snout like a duck's bill, have been discovered in the Sahara by National Geographic Explorer-in-Residence Paul Sereno.
Sperm, and not just the fluid it bathes in, can transmit HIV to macrophages, T cells, and dendritic cells (DCs), report a team led by Ana Ceballos at the University of Buenos Aires in Argentina.
ANN ARBOR, Mich.---A new investigation of a fossilized tracksite in southern Africa shows how early dinosaurs made on-the-fly adjustments to their movements to cope with slippery and sloping terrain. Differences in how early dinosaurs made these adjustments provide insight into the later evolution of the group.
BUENOS AIRES, ARGENTINA (23 September 2009) -- As climate change negotiators continue to skirt the role of agricultural land use in reducing greenhouse gas emissions, top scientists working on land management in the world's vast dry areas will gather this week in Buenos Aires, Argentina, determined to make the case that thwarting desertification in drylands is viable and also critical to the su
WASHINGTON, Aug. 18, 2009 -- A scientific trend to view the world's biggest cities as analogous to living, breathing organisms is fostering a deep new understanding of how poor air quality in megacities can harm residents, people living far downwind, and also play a major role in global climate change.
July 30, 2009 -- Researchers at the Center for Infection and Immunity (CII) at Columbia University Mailman School of Public Health are working with Argentina's National Institute of Infectious Diseases, the National Administration of Laboratories and Health Institutes (ANLIS), and Roche 454 Life Sciences to decode the complete genomic sequences of influenza pandemic (H1N1) 2009 virus from patie
Scientists have joined forces in a groundbreaking assessment on the status of marine fisheries and ecosystems.
The two-year study, led by Boris Worm of Dalhousie University and Ray Hilborn of the University of Washington and including an international team of 19 co-authors, shows that steps taken to curb overfishing are beginning to succeed in five of the 10 large marine ecosystems that the
A new study of 30 million year old fossil 'mega-dung' from extinct giant South American mammals reveals evidence of complex ecological interactions and theft of dung-beetles' food stores by other animals.
DURHAM, N.C. -- How did piranhas -- the legendary freshwater fish with the razor bite -- get their telltale teeth? Researchers from Argentina, the United States and Venezuela have uncovered the jawbone of a striking transitional fossil that sheds light on this question.
Well-heeled donors, private corporations and average citizens sending money to their favorite charities are changing the landscape of global health funding, according to a new study by the Institute for Health Metrics and Evaluation (IHME) at the University of Washington.
Taking the diabetes medications metformin and rosiglitazone together reverses the adverse effects on bone of rosiglitazone treatment alone in an experimental model, according to a new study done in rats. The results were presented at The Endocrine Society's 91st Annual Meeting in Washington, D.C.
The article written by Rosa Binimelis, Walter Pengue and Iliana Monterroso, is the product of collaborative work among the Autonomous University of Barcelona, University of Buenos Aires and the Latin American Faculty of Social Sciences in Guatemala.
Some already are labeling it the “Great Biodiesel Shutdown of 2009,” but whatever you call it, America’s effort to supplant petroleum-based diesel with renewable biofuel is having a breakdown this year – and whether it’s just a flat tire or a major engine blowout remains to be seen.
To avoid creating greenhouse gases, it makes more sense using today's technology to leave land unfarmed in conservation reserves than to plow it up for corn to make biofuel, according to a comprehensive Duke University-led study.
New fossil finds in Argentina stand to alter views of faunal change at the end of the Triassic. Most evidence indicates that the transition at the end of the Triassic, 205 million years ago, was a period of widespread extinction, leading to the ascendancy of dinosaurs during the Jurassic. The new Argentinean finds tell a different story: Vertebrate animals in the Upper Triassic were apparently more diverse in this region, showing a mixture Triassic and Jurassic forms that turns the extinction model on its head.
