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Forschungsschiff Sonne auf Schatzsuche

By Guest PostMarch 14, 2015Environmentbrainnet, junge sterne, linxing preston iang, mexiko, neuroethics, panama, telepathic communication, tetris like game, umwelt, werkzeug

SONNE Expedition SO239: Europäische Forscher ergründen die möglichen Auswirkungen des Tiefseebergbaus

Die Untersuchung der biologischen und geologischen Konsequenzen des Meeresbodenbergbaus ist das Ziel einer Forschungsreise auf dem neuen deutschen Forschungsschiff Sonne, das heute in See sticht. Von Panama aus geht es in die pazifische Manganknollenregion. Dort werden unter der Leitung des Forschungsinstituts Senckenberg am Meer Wissenschaftlerinnen und Wissenschaftler aus 11 europäischen Nationen Proben aus etwa 5000 Meter Tiefe sammeln, um Einblicke in die Faunengemeinschaften von Manganknollenfeldern zu erhalten und deren Widerstandsfähigkeit gegenüber einem Abbau besser abschätzen zu können. Am 30. April wird die Sonne in Manzanillo (Mexiko) wieder einlaufen. (more…)

Large Old Trees Grow Fastest, Storing More Carbon

By Guest PostJanuary 18, 2014Environmentadrian das, amount of co2, atmosphere, australia, carbon, generate, kings canyon, large old trees, nate stephenson, national park, panama, pinus monticola, sequester, store, subtropical, temperate region, tree species, tropical, U.S. Geological Survey, united kingdom, united states, western white pine

THREE RIVERS, Calif, — Trees do not slow in their growth rate as they get older and larger — instead, their growth keeps accelerating, according to a study published in the journal Nature.

“This finding contradicts the usual assumption that tree growth eventually declines as trees get older and bigger,” says Nate Stephenson, the study’s lead author and a forest ecologist with the U.S. Geological Survey. “It also means that big, old trees are better at absorbing carbon from the atmosphere than has been commonly assumed.” (more…)

Singing Mice Protect Their Turf With High-Pitched Tunes

By Guest PostOctober 8, 2013Naturealstons singing mouse, austin, bret pasch, chiriqui singing mouse, conflict, costa rica, forest, high pitched tunes, human hearing, lifestyle, mountain cloud, panama, range, s xerampelinus, scotinomys teguina, singing mice, steven phelps, temperature tolerant, university of texas

AUSTIN, Texas — Two species of tawny brown singing mice that live deep in the mountain cloud forests of Costa Rica and Panama set their boundaries by emitting high-pitched trills, researchers at The University of Texas at Austin have discovered.

Although males of both the Alston’s singing mouse (Scotinomys teguina) and Chiriqui singing mouse (S. xerampelinus sing to attract mates and repel rivals within their respective species, the findings show for the first time that communication is being used to create geographic boundaries between species.

In this case, the smaller Alston’s mouse steers clear of its larger cousin, the Chiriqui. (more…)

Leader in Study Abroad

By Guest PostNovember 13, 2012Educationafrica, Antarctica, China, concept, cultures, delaware, doctoral institutions, iie, India, institute, international education, invent, kayla volpe, lisa chieffo, miami university, nancy guerra, open doors, panama, programs, saudi arabia, saudi government, scholarship, short term, south korea, student, study abroad, turkey, university, Washington

UD ranks third among U.S. public doctoral institutions in study abroad participation

The University of Delaware ranks third in study abroad participation among U.S. public doctoral institutions, according to the 2012 Open Doors report released Nov. 13 by the Institute of International Education (IIE).

During the 2010–11 academic year, more than one out of every three UD students (34.7 percent) studied abroad. Most pursued “short term” programs of eight weeks or less. (more…)

Homeland Security Chief Speaks About Challenges Facing U.S., Global Cooperation

By Guest PostApril 18, 2012Politicsagency, canada, central american border, costa rica, criminal law, cyber criminal, deportation, dream act, drug, education, globalized world, guatemala, homeland security, honduras, human smuggling, immigration reform, intellectual property, janet napolitano, korn hall, Mexico, panama, secretary, ucla, united states

The United States is stronger and more secure than it was prior to 9/11, but threats from overseas remain and must be proactively managed, said Secretary of Homeland Security Janet Napolitano, who visited campus April 16 for a public talk sponsored by the UCLA Burkle Center for International Relations.

In a globalized world, international cooperation is the key to identifying those who intend to do harm, she said, adding that threats to the global supply chain, the activities of drug and human smuggling organizations, and the prevalence of cyber-criminals who attempt to steal information and intellectual property and disrupt critical networks are among the major challenges facing the Department of Homeland Security. (more…)

Slow Snails, Fast Genes: Predatory Snails Refine Venoms Through Continuous Gene Duplication

By Guest PostApril 3, 2012Natureamerican samoa, cone snail, conotoxins, dan chang, DNA, gene, gene family, genus conus, hawaii, marine, molecular mechanism, neurotoxin, olfactory genes, panama, scorpion, snake, thomas duda, tropical, venoms

ANN ARBOR, Mich.— When tropical marine cone snails sink their harpoon-like teeth into their prey, they inject paralyzing venoms made from a potent mix of more than 100 different neurotoxins.

Biologists have known for more than a decade that the genes which provide the recipes for cone snail toxins are among the fastest-evolving genes in the animal kingdom, enabling these predatory gastropods to constantly refine their venoms to more precisely target the neuromuscular systems of their prey. (more…)

Ancient Popcorn Discovered in Peru

By Guest PostJanuary 26, 2012Scienceacademia nacional de la historia, andean region, ceramic pottery, coast of peru, corn microfossils, corncobs, dolores piperno, duccio bonavia, grains, huaca prieta, human welfare, husks, kernels, maize, male flowers, Mexico, panama, panama city, paredones, phytoliths, popcorn, smithsonian tropical research institute, south america, stalks, tassels, teosinte, tom dillehay, tropical ecosystem, tropical forests, tropical nature, vanderbilt university, wild grass

People living along the coast of Peru were eating popcorn 2,000 years earlier than previously reported and before ceramic pottery was used there, according to a new paper in the Proceedings of the National Academy of Sciences co-authored by Dolores Piperno, curator of New World archaeology at the Smithsonian’s National Museum of Natural History and emeritus staff scientist at the Smithsonian Tropical Research Institute.

Some of the oldest known corncobs, husks, stalks and tassels (male flowers), dating from 6,700 to 3,000 years ago were found at Paredones and Huaca Prieta, two mound sites on Peru’s arid northern coast. The research group, led by Tom Dillehay from Vanderbilt University and Duccio Bonavia from Peru’s Academia Nacional de la Historia, also found corn microfossils: starch grains and phytoliths. Characteristics of the cobs—the earliest ever discovered in South America—indicate that the sites’ ancient inhabitants ate corn several ways, including popcorn and flour corn. However, corn was still not an important part of their diet. (more…)

A Whole New Meaning for Thinking on Your Feet

By Guest PostJanuary 9, 2012Natureaxons, biodiversity of spiders, body cavities, brain, brain cells, brain power, brain size and behavior, central nervous systems, costa rica, diameter, energy, genes, genus, hallers rule, human brains, miniaturization, mysmena, nephila clavipes, nerve fibers, nerve signals, nervous system, nucleus, nymphs of spiders, panama, rainforest, rainforest giant, smallest spiders, smithsonian researchers, smithsonian tropical research institute, species of spiders, tiny spiders, tropical ecosystems, tropics, understanding of tropical nature, william wcislo

Smithsonian researchers report that the brains of tiny spiders are so large that they fill their body cavities and overflow into their legs. As part of ongoing research to understand how miniaturization affects brain size and behavior, researchers measured the central nervous systems of nine species of spiders, from rainforest giants to spiders smaller than the head of a pin. As the spiders get smaller, their brains get proportionally bigger, filling up more and more of their body cavities.

“The smaller the animal, the more it has to invest in its brain, which means even very tiny spiders are able to weave a web and perform other fairly complex behaviors,” said William Wcislo, staff scientist at the Smithsonian Tropical Research Institute in Panama. “We discovered that the central nervous systems of the smallest spiders fill up almost 80 percent of their total body cavity, including about 25 percent of their legs.” (more…)

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