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Archaeologists Find New Evidence of Animals Being Introduced to Prehistoric Caribbean

By Guest PostDecember 13, 2011Scienceagoutis, animal remains, armadillos, arrival of columbus, caribbean, caribbean islands, carriacou, charcoal, daily consumption, guinea pigs, michelle lefebvre, north carolina state university, opossum, pig like peccaries, pre columbian caribbean, prehistoric non native animal, prehistoric villages, rodents, scott fitzpatrick, south america, tiny island, university of florida, university of washington

An archaeological research team from North Carolina State University, the University of Washington and University of Florida has found one of the most diverse collections of prehistoric non-native animal remains in the Caribbean, on the tiny island of Carriacou. The find contributes to our understanding of culture in the region before the arrival of Columbus, and suggests Carriacou may have been more important than previously thought.

The researchers found evidence of five species that were introduced to Carriacou from South America between 1,000 and 1,400 years ago. Only one of these species, the opossum, can still be found on the island. The other species were pig-like peccaries, armadillos, guinea pigs and small rodents called agoutis. (more…)

Jeopardy! Winnings Spur IBM and Scripps Research Institute Collaboration to Fight Against Malaria

By Guest PostNovember 18, 2011Science, Technologyafrica, alex l perryman, asia, clean water techniques, critical to human health, drug resistant strains, economic distress, go fight against malaria, hiv, human competitors, ibm, jeopardy game, malaria, mike pique, multi drug resistant aids, plasmodium falciparum, renewable energy materials, ruth huey, sargis dallakyan, scripps research institute, south america, stefano forli, subhash sinha, supercomputer of the people, watson computing system, world community grid, world health organization

*Project to use 2 million PCs to crunch numbers, compress 100 years of research into just one*

LA JOLLA, CA and ARMONK, NY – IBM’s Watson computing system broke new ground earlier this year when it defeated two celebrated human competitors on the Jeopardy! game show. Now, The Scripps Research Institute is hoping to do something equally novel but more critical to human health with part of the prize money from that tournament: Find a cure for drug-resistant malaria. And it’s asking for the public’s help.

To that end, Scripps Research and IBM are encouraging anyone in the world with a personal computer to join World Community Grid, a sort of “supercomputer of the people” that will crunch numbers and perform simulations for “GO Fight Against Malaria”—the project that Scripps Research and IBM have launched at https://www.worldcommunitygrid.org. (more…)

Chagas Disease May Be A Threat in South Texas, Says Researcher

By Guest PostOctober 10, 2011Health, Sciencebugs, chagas disease, chagas disease in texas, chagas infections, disease, heart and digestive disorders, insects, kissing bugs, latin america, Mexico, multi layered attack, philip williamson, protozoa, sahotra sarkar, south america, south texas, texas, triatomine bugs, tropical parasitic disease, trypanosoma cruzi, university of texas at austin

AUSTIN, Texas — Chagas disease, a tropical parasitic disease that can lead to life-threatening heart and digestive disorders, may be more widespread in Texas than previously thought, according to research from The University of Texas at Austin.

“We’ve been studying this for four years now, and this year the number of disease-causing insects is quite amazing,” says Sahotra Sarkar, professor of integrative biology and philosophy at The University of Texas at Austin and lead author of a paper on the disease published in PLoS Neglected Tropical Diseases. (more…)

What’s so Unique About the Tropics?

By Guest PostSeptember 23, 2011Environment, Sciencebeta diversity, brad boyle, calgary, canada, costa rica, distribution of biodiversity across the globe, ecological mechanisms, ecologists, elevations in mountain regions, extinctions, geographical scales, latitudinal diversity gradient, nathan j b kraft, new zealand, northern europe, panama, south america, speciation, temperate forests of canada, tropical rainforests of southeast asia, tropics, university of arizona ecologist, university of british columbia, university of maryland

“Less than we thought,” researchers say in a new study providing insights into the distribution of biodiversity across the globe.

The temperate forests of Canada or Northern Europe may have much more in common with the tropical rainforests of Southeast Asia or South America than previously believed, according to a research group including a University of Arizona ecologist.

The assertion, published as the cover article in the journal Science, is focused on the concept of “beta-diversity” – a measure of the change in species composition between two sites, such as neighboring patches of forest. High beta-diversity means that two given sites have few species in common. (more…)

Glaciers Contributing To Faster Sea-Level Rise

By Guest PostApril 9, 2011Environmentglaciers, industrial revolution, little ice age, mountain glaciers, neil glasser, outlet glaciers, patagonian icefields, sea-level rise, south america, stephan harrison

Melting mountain glaciers are contributing to sea-level rise faster than at any time in the last 350 years, according to new research published in Nature Geoscience.

A research team from the University of Exeter, Aberystwyth University, and Stockholm University undertook a survey of the 270 largest outlet glaciers of the South and North Patagonian Icefields of South America. (more…)

Brazil Continues to Celebrate After Carnival

By Guest PostMarch 8, 20112 commentsPoliticsArgentina, brazil, brazil and the united states, brazilian steel industry, bridge, carnivals, coffee trade, cold war, cultural difference, diamonds, Economy, Europe, footballers, Germany, joseph smith, language barriers, major global power, popular world view, portuguese, president roosevelt, rio branco, russia, south america, spanish speaking countries, sugar industry, superpower, united states, usa, world war two

The popular world view of Brazil may be triggered by thoughts of spectacular Carnivals and skilled footballers, yet the country is also determined to be regarded as a major global power.

The most comprehensive historical review of Brazilian relations with superpower USA has been written by a University of Exeter historian and identifies how the relationship has developed over the last 200 years. (more…)

UF Study Traces Global Red Imported Fire Ant Invasions to Southern U.S.

By Guest PostFebruary 27, 2011Environment, Natureallergic, ant stings, australia, california, China, dewayne shoemaker, effective biological control agents, fire ant, global trade, globe, humans, invasive species, marina ascunce, molecular genetic markers, mound, new zealand, pesticides, pests, phorid flies, red fire ant invasions, solenopsis invicta, south america, southern u s, taiwan, travel network

GAINESVILLE, Fla. — Red imported fire ant invasions around the globe in recent years can now be traced to the southern U.S., where the nuisance insect gained a foothold in the 1930s, new University of Florida research has found.

Native to South America, the ant had been contained there and in the southeastern U.S. before turning up in faraway places in the last 20 years — including California, China, Taiwan, Australia and New Zealand. (more…)

X-Ray Diffraction May Play Key Role in Stopping ‘Kissing Bug,’ Fungus

By Guest PostOctober 22, 2010Health, Scienceaspergillus fumigates, blood-sucking insect, chagas parasite, crime scenes, cure, dale karr, drugs, enzyme, fungus, john tanner, kissing bug, organisms, pablo sobrado, parasite, pathogens, pulmonary diseases, south america, sugar molecule, virginia tech, x ray diffraction

John Tanner, who also teaches chemistry in the College of Arts and Science, is studying Aspergillus fumigatus. Image credit: University of Missouri

COLUMBIA, Mo. – If finding the cure for a fungus and parasite that affects millions of people were the subject of a detective show, University of Missouri Chemistry Professor John Tanner would be the forensic expert in the lab, using high-tech equipment to make a model that could eventually solve the crime.

Tanner, who also teaches chemistry in the College of Arts and Science, has joined forces with Pablo Sobrado, an assistant professor of biochemistry at Virginia Tech, to study a unique enzyme found on two “crime scenes”: in Aspergillus fumigatus, a fungus that causes pulmonary diseases in immuno-compromised people; and in a blood-sucking insect prevalent in South America and now being found in the southwestern U.S., called the Chagas parasite, also known as the “kissing bug” for the red welts left on the victims’ faces after being bitten in his or her sleep.

“My job is to figure out what the enzyme looks like using X-ray diffraction,” Tanner said. “This enzyme makes a special sugar molecule that these organisms need to survive, so if we can find a way to stop the reaction that makes that sugar, then we might find a way to kill these pathogens.” (more…)

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