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Tortoise Species Thought to Be Extinct Still Lives, Genetic Analysis Reveals

By Guest PostJanuary 10, 2012Naturec elephantopus, charles darwin, chelonoidis elephantopus, domed shaped shells, ecological integrity, floreana, floreana island, galapagos islands, genetic analysis, genetic database, giant tortoises, gisella caccone, hunting by whalers, hybrid offspring, isabela, isabela island, missing species, northern shore, northern tip of isabela island, probability, ryan garrick, saddle shaped, shells of tortoises, species, theory of natural selection, university of mississipi, volcanic slopes, volcano wolf, volcano wolf tortoises, voyage to the galapagos, yale university

Dozens of giant tortoises of a species believed extinct for 150 years may still be living at a remote location in the Galápagos Islands, a genetic analysis conducted by Yale University researchers reveals.

The analysis, published Jan. 9 in the journal Current Biology, suggests that direct descendants of at least 38 purebred individuals of Chelonoidis elephantopus live on the volcanic slopes of the northern shore of Isabela Island — 200 miles from their ancestral home of Floreana Island, where they disappeared after being hunted by whalers. (more…)

Yale Engineers Making Solar Power More Efficient

By Guest PostDecember 14, 2011Environment, Scienceandre d taylor, applied physicists, arrays, chinedum o osuji, clean energy technology, electricity, energy, engineers, flow of electrons, fraction of light, hybrid organic inorganic pv devices, lisa d pfefferle, magnetic fields, photovoltaic systems, photovoltaics, polymer coated nanowires, pv, pv systems, sohrab ismail beigi, solar cell, solar power technology, yale university

Innovations by a team of Yale University researchers could lead to improvements in basic solar power technology that result in lower-cost, higher-efficiency photovoltaic systems.

Photovoltaics (PV) directly convert sunlight into electricity. PV systems can be arrayed on rooftops to generate electricity for entire buildings, among other uses. Less expensive, more efficient systems could encourage broader use of this clean energy technology. (more…)

Novel Nanoparticle Mimicking Virus Offers New Route to Gene Therapy

By Guest PostDecember 10, 2011Sciencebrain tumors, cancer, caroline e weller, christopher j cheng, cystic fibrosis, diseases, gene therapy, healthy cells, huntingtons disease, hydrophobic, immune reactions, materials, mouse tumor model, nanoparticle, non viral gene therapy, novel chemistry, polymers, positive electric charge, repair, symptoms, treatments, viral gene therapy, w mark saltzman, water molecules, water repellant, yale university, zhaozhong jiang

Researchers at Yale University have developed a novel nanoparticle with promising applications in gene therapy, a type of medical treatment that addresses the root causes of diseases now typically treated for symptoms.

The advance could lead to new therapies for many forms of cancer, including brain tumors, as well as for cystic fibrosis and Huntington’s Disease. (more…)

Yale Discovery of ‘Young’ Supermassive Black Holes Challenges Current Theory

By Guest PostDecember 9, 2011Scienceastronomers, big bang, black hole, brooke simmons, Chile, current theory, data, earth time, eilat glikman, ezequiel treister, fast growing, Galaxy, host galaxies, Hubble Space Telescope, kevin schawinski, mass range, Milky Way, priyamvada natarajan, supermassive black holes, universidad de concepcion, yale discovery, yale university

Astronomers at Yale University have discovered what appear to be three fast-growing supermassive black holes in a relatively young, still-forming galaxy.

The discovery raises the possibility that this type of black hole continues to form billions of years after the Big Bang, challenging current theory. Astronomers previously thought all supermassive black holes emerged soon after the birth of the universe 13.7 billion years ago. (more…)

Yale-led Team Finds CO2 Levels Plunged as Antarctica Froze

By Guest PostDecember 3, 2011Environmentalgae, atmosphere, carbon dioxide levels, climate transition, co2 and climate change, critical condition, cryosphere, earth, eocene epoch, eocene to oligocene, freezing of antarctica, fundamental link, geochemist, global climate change, global cooling, greenhouse gases, ice sheets, icing of antarctica, mark pagani, matthew huber, molecules, oligocene, polar ice caps, robert m deconto, sea level, temperatures, yale university, zhonghui liu

A Yale University-led research team has found evidence that carbon dioxide levels in Earth’s atmosphere plunged prior to and during the initial icing of Antarctica, about 34 million years ago. The new findings provide further evidence of atmospheric carbon dioxide’s role as a major trigger of global climate change.

“CO2 is tracking global cooling at that time,” said Yale geochemist Mark Pagani, lead author of a paper published online Dec. 1 in the journal Science. “It’s important to demonstrate that there are obvious linkages between CO2 and climate change. It’s one more piece of evidence that CO2 is a primary lever on climate.” (more…)

Watching the Nervous System Being Wired in Real Time

By Guest PostDecember 2, 2011Sciencebill hathaway, daniel colon ramos, imaging technology, living organism, migration of cells, nervous system, neurodevelopmental atlas, new diseases, single cell, worm, yale, yale cell biologist, yale university

Thanks to a new imaging technology developed at Yale, the National Institutes of Health and Sloan-Kettering, scientists can now see for the first time the development of a living organism at the level of a single cell.

One of the developers, Yale cell biologist Daniel Colon-Ramos, illustrates the power of the new technology in this video that shows the migration of cells that will form the nervous system in a developing worm. (more…)

Len Peters: Preparing for the Technological Future

By Guest PostNovember 21, 2011Technologychief information security officer (ciso), columbia business school, customer satisfaction, digital assets, fantastic technology service, information technology services (its), infrastructure’s strategy, ipads, len peters, preparing for the technological future, rich mikelinich, susan gonzalez, town hall meeting, transformative technological change, university broadens, yale university, yalenews

In a recent Town Hall meeting with staff in Information Technology Services (ITS) and IT partners from across campus, Yale’s Chief Information Officer Len Peters pointed out some of the technological changes that have taken place in the past 10 years — listing facts that might make some of today’s students think he was talking about an ancient world.

Just a decade ago, he noted, text messaging and smart phones weren’t being used on campuses (although nearly 70% of students had cell phones), and less than 30% of students had some form of wireless computer setup. (more…)

Yale Engineers Invent Novel Way to Sort Microparticles – By Size

By Guest PostNovember 18, 2011Scienceayse rezzan kose, complex fluids based on size, concentrating synthetic microscopic, diagnostic, eric gershon, ferro-microfluidic cytometer, high-throughput cytometers, highly efficient technique for separating, hur koser, isolating rare liquid-borne pathogens, magnetic nanoparticles, microparticles into separate, monitoring tumor cells in bloodstreams, next-generation nanocytometer, pharmaceutical applications, rapidly assessing blood cell counts, rapidly isolate, rare bacteria for environmental testing, significant clinical, sorting, yale university

Engineers at Yale University have developed a new, highly efficient technique for separating, sorting, and concentrating synthetic microscopic particles within complex fluids based on size.

The new technique suggests the possibility of significant clinical, diagnostic, and pharmaceutical applications, such as isolating rare liquid-borne pathogens, monitoring tumor cells in bloodstreams, and rapidly assessing blood cell counts, for example. (more…)

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