News Articles

Newly exposed parts of Tiktaalik roseae--the intermediate fossil between fish and the first animals to walk out of water onto land 375 million years ago--are revealing how this major evolutionary event happened. A new study in Nature provides a detailed look at the internal head skeleton of Tiktaalik roseae and reveals a key intermediate step in the transformation of the skull that accompanied the shift to life on land by our distant ancestors.
A predator, up to nine feet long, with sharp teeth, a crocodile-like head and a flattened body, Tiktaalik's anatomy and way of life straddle the divide between fish and land-living animals. First described in 2006, and quickly dubbed the "fishapod," it had fish-like features such as a primitive jaw, fins and scales, as well as a skull, neck, ribs and parts of the limbs that are similar to tetrapods, four-legged animals.

Another multi-billion-dollar taxpayer bailout could lie ahead, this time to rescue a cash-strapped government program that insures pensions of 44 million American workers and retirees, a University of Illinois finance professor warns.
Jeffrey R. Brown says the troubled Pension Benefit Guaranty Corp., which steps in when private-sector employers with under funded defined-benefit plans go bankrupt, was $14 billion short of the cash it will need to cover pensions based on the latest estimates released a year ago.
But he predicts the shortfall will soar as a sour economy shutters more businesses and a plunging stock market carves into pension fund assets, with a government fix similar to this month's $700 billion Wall Street bailout as the likely solution.

People with autism-related disorders are less likely to make irrational decisions, and are less influenced by gut instincts, according to research funded by the Wellcome Trust. The study adds to the growing body of research implicating altered emotional processing in autism.
Decision-making is a complex process, involving both intuition and analysis: analysis involves computation and more "rational" thought, but is slower; intuition, by contrast, is much faster, but less accurate, relying on heuristics, or "gut instincts".

Hot, young planets may be easier to spot because they stay that way longer than astronomers have thought, according to new work by MIT planetary scientist Linda Elkins-Tanton.
For a few million years after their initial formation, planets like Earth may maintain a hot surface of molten rock that would glow brightly enough to make them stand out as they orbit neighboring stars. Elkins-Tanton, Mitsui Career Development Professor of Geology in the Department of Earth, Atmospheric and Planetary Sciences, says the “magma ocean” stage for Earth-sized planets may last a few million years, much longer than previously estimated. “That means we may actually see them elsewhere, as detection systems get better,” she said.

Schoolchildren, families and citizen scientists around the world will gaze skyward after dark from Oct. 20 to Nov.3, 2008, looking for specific constellations and then sharing their observations through the Internet.
The Great World Wide Star Count, now in its second year, helps scientists map light pollution globally while educating participants about the stars.
The event, which is open to everyone who wants to participate, is organized by the Windows to the Universe project at the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo., in conjunction with planetariums and scientific societies across the country and abroad.

Yale Cancer Center researchers have identified a genetic biomarker that may help to determine why some people are at an increased risk of developing lung cancer.
The findings, published in the journal Cancer Research, could help identify smokers who should be carefully screened for lung cancer.
“Only 10% of smokers will develop lung cancer in their lifetime and genetic testing to determine the population of smokers who are most predisposed to develop the disease is needed to help guide better evaluation for these people,” explained Joanne B. Weidhaas, MD, PhD, assistant professor of therapeutic radiology at Yale School of Medicine and senior author on the study in collaboration with Frank Slack, PhD, associate professor in the department of molecular, cellular and developmental biology at Yale University.

The discovery of the earliest known cases of human tuberculosis (TB) in bones found submerged off the coast of Israel shows that the disease is 3000 years older than previously thought. Direct examination of this ancient DNA confirms the latest theory that bovine TB evolved later than human TB.
The new research sheds light on how the TB bacterium has evolved over the millennia and increases our understanding of how it may change in the future.
The bones, thought to be of a mother and baby, were excavated from Alit-Yam, a 9000 year-old Pre-Pottery Neolithic village, which has been submerged off the coast of Haifa, Israel for thousands of years. Professor Israel Hershkovitz, from Tel-Aviv University's Department of Anatomy, noticed the characteristic bone lesions that are signs of TB in skeletons from the settlement, one of the earliest with evidence of domesticated cattle.

A new study sheds light on the lives of teenage boys who abuse their girlfriends. In their own words, the young men often describe facing challenges such as growing up with troubled family lives, having little or no support when they began to fail at school, and witnessing violence in their own homes and communities. The study advocates broadening the view of abusive behaviors within dating relationships to explore the myriad environments — school, home and community — that affect boys' lives and actions.

'Blindsight' is a phenomenon in which patients with damage in the primary visual cortex of the brain can tell where an object is although they claim they cannot see it.
A research team led by Prof. Tadashi Isa and Dr. Masatoshi Yoshida of the National Institute for Physiological Sciences, Japan, provides compelling evidence that blindsight occurs because visual information is conveyed bypassing the primary visual cortex.

Hershey's Center for Health and Nutrition announced the publication of a study that shows resveratrol, the compound often associated with the health benefits of red wine, is also found in cocoa and dark chocolate products. In the September 24 edition of the Journal of Agricultural and Food Chemistry, Hershey scientists conducting a report that cocoa powder, baking chocolate and dark chocolate all have significant levels of resveratrol, a naturally occurring antioxidant.
"This study shows that the levels of resveratrol found in cocoa and chocolate products is second to red wine among known sources of resveratrol and forms yet another important link between the antioxidants found in cocoa and dark chocolate to other foods," says David Stuart, PhD, Director of Natural Product Science at The Hershey Company who partnered with Planta Analytica to conduct this study.

Cellular damage due to stress is an important factor in aging processes. It is therefore strange that starving, which is stressful, decelerates aging processes and extends the lifespan of organisms.
Proteins from the sirtuin family contribute to this mechanism but the exact function of the seven members of the sirtuin family in mammals has not yet been clarified. Results obtained in studies performed by protein research scientists in Bochum and Dortmund under the auspices of Assistant Professor Dr. Clemens Steegborn (Institute for Physiological Chemistry at RUB) have supplied first insights into this phenomenon.
The scientists identified initial functions of the two human sirtuins Sirt3 and Sirt5 that reside in mitochondria, the energy supplying “cellular power stations.”

Astronomers using the James Clerk Maxwell Telescope (JCMT) in Hawaii are making new discoveries about the origins of the planets, stars and galaxies with the start of a new survey to map the Universe.
The JCMT Legacy Survey, made up of 7 projects, makes use of two sophisticated new instruments - SCUBA-2 and HARP – which will allow the astronomers to detect and probe clouds of cold dust associated with the mysterious earliest phases of the formation of galaxies, stars and planets.
SCUBA-2 is a powerful camera capable of mapping regions of the sky by detecting the heat emitted by this extremely cold dust. It has recently been delivered to the JCMT and is under commission. When completed it will have the ability to pinpoint and image many hundreds of distant, dust enshrouded galaxies in a single night.