The smallest and largest caseid: this is a reconstruction of 300-million-year-old tiny carnivorous <i>Eocasea</i>  in the footprint of 270-million-year-old largest known herbivore of its time,  <i>Cotylorhynchus</i>.
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Ancient 'spider' images reveal eye-opening secrets

This is the 305-million-year-old harvestman fossil.Stunning images of a 305-million-year-old harvestman fossil reveal ancestors of the modern-day arachnids had two sets of eyes rather than one.

Brain changes are associated with casual marijuana use in young adults

The size and shape of two brain regions involved in emotion and motivation may differ in young adults who smoke marijuana at least once a week, according to a study...

SU professors test boundaries of 'new physics' with discovery of 4-quark hadron

This is Syracuse University professor Sheldon Stone.Physicists in Syracuse University's College of Arts and Sciences have helped confirm the existence of exotic hadrons -- a type of matter that cannot be classified within the traditional quark...

Information storage for the next generation of plastic computers

Inexpensive computers, cell phones and other systems that substitute flexible plastic for silicon chips may be one step closer to reality, thanks to research published on April 16 in the...

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Novel technique developed by NUS scientists opens door to better solar cells

This shows Dr. Anil Annadi, Asst Prof Ariando, Asst Prof Andrivo Rusydi and Mr. Teguh Citra Asmara of the Dept of Physics at NUS Faculty of Science (from left to right) with the spectroscopic ellipsometry facility utilized in the study.A team of scientists, led by Assistant Professor Andrivo Rusydi from the Department of Physics at the National University of Singapore's (NUS) Faculty of Science, has successfully developed a technique...

Scientists firm up origin of cold-adapted yeasts that make cold beer

Patagonian galls such as these harbor the cold-adapted yeast <i>Saccharomyces eubayanus</i>, a parent of the hybrid yeast used to make lager or cold-brewed beer. A field survey has confirmed that the parent yeast <i>S. eubayanus</i>, which somehow made its way to Bavaria 500 or so years ago, is easily isolated in Patagonia. A Wisconsin team recently isolated the yeast, although at low frequency, near Sheboygan, Wis. -- the first time it has been found in nature in North America.As one of the most widely consumed and commercially important beverages on the planet, one would expect the experts to know everything there is to know about lager beer.

Sneak a peek through the mist to technology of the future

This image shows MisTable: reach-through personal screens for tabletops.A tabletop display with personal screens made from a curtain of mist that allow users to move images around and push through the fog-screens and onto the display, will be...

Astronomers: 'Tilt-a-worlds' could harbor life

A fluctuating tilt in a planet's orbit does not preclude the possibility of life, according to new research by astronomers at the University of Washington, Utah's Weber State University and...

Sensitive detection method may help impede illicit nuclear trafficking

This is a simulated inspection of a layered baggage-like object that contains a thin, shielded plutonium wedge (a), not to scale.  A single energy radiograph is shown in (b) along with the material estimations from the adaptive inverse algorithm which show an equivalent of color vision (by material) for a single-view radiograph using spectral X-ray detector data.According to the International Atomic Energy Agency (IAEA) the greatest danger to nuclear security comes from terrorists acquiring sufficient quantities of plutonium or highly enriched uranium (HEU) to construct a...

Neuroscientists: Brain activity may mark the beginning of memories

By tracking brain activity when an animal stops to look around its environment, neuroscientists at the Johns Hopkins University believe they can mark the birth of a memory.

Laboratory-grown vaginas implanted in patients, scientists report

Scientists reported today the first human recipients of laboratory-grown vaginal organs. A research team led by Anthony Atala, M.D., director of Wake Forest Baptist Medical Center's Institute for Regenerative Medicine, describes in the Lancet long-term success in four teenage girls...

Ancient shark fossil reveals new insights into jaw evolution

This image shows a 3-D reconstruction of the skull of <i>Ozarcus mapesae</i>. The braincase is shown in light gray, the jaw is shown in red, the hyoid arch is shown in blue, and the gill arches are shown in yellow.The skull of a newly discovered 325-million-year-old shark-like species suggests that early cartilaginous and bony fishes have more to tell us about the early evolution of jawed vertebrates -- including...

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World ranking tracks evoluntionary distinctness of birds

A team of international scientists, including a trio from Simon Fraser University, has published the world's first ranking of evolutionary distinct birds under threat of extinction. These include a cave-dwelling...

A study in scarlet

This new image from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile reveals a cloud of hydrogen and newborn stars called Gum 41. In the middle of this little-known nebula, brilliant hot young stars emit energetic radiation that causes the surrounding hydrogen to glow with a characteristic red hue.This area of the southern sky, in the constellation of Centaurus (The Centaur), is home to many bright nebulae, each associated with hot newborn stars that formed out of the...

La Brea Tar Pit fossil research shows climate change drove evolution of Ice Age predators

Dr. O'Keefe and Dr. Meachen used over 200 La Brea fossils in their research.Concerns about climate change and its impact on the world around us are growing daily. New scientific studies at the La Brea Tar Pits are probing the link between climate...

Odds that global warming is due to natural factors: Slim to none

An analysis of temperature data since 1500 all but rules out the possibility that global warming in the industrial era is just a natural fluctuation in the earth's climate, according...

Warm US West, cold East: A 4,000-year pattern

University of Utah geochemist Gabe Bowen led a new study, published in <i>Nature Communications</i>, showing that the curvy jet stream pattern that brought mild weather to western North America and intense cold to the eastern states this past winter has become more dominant during the past 4,000 years than it was from 8,000 to 4,000 years ago. The study suggests global warming may aggravate the pattern, meaning such severe winter weather extremes may be worse in the future.Last winter's curvy jet stream pattern brought mild temperatures to western North America and harsh cold to the East. A University of Utah-led study shows that pattern became more pronounced...

New technique takes cues from astronomy and ophthalmology to sharpen microscope images

This image is a frame grab from a video showing imaging from an adaptive optics (AO) microscope operating in two-photon excitation (TPE) mode.
Imaging shows a membrane-labeled subset of neurons in the brain of a living zebrafish embryo. This image shows what one would see with
adaptive optics (AO) and deconvolution turned on.The complexity of biology can befuddle even the most sophisticated light microscopes. Biological samples bend light in unpredictable ways, returning difficult-to-interpret information to the microscope and distorting the resulting image....

Biologists develop nanosensors to visualize movements and distribution of plant hormone

Biologists at UC San Diego have succeeded in visualizing the movement within plants of a key hormone responsible for growth and resistance to drought. The achievement will allow researchers to...

Device turns flat surface into spherical antenna

The prototype of the fabricated metasurface lens shown with simulated x components of electric fields at 9 GHz with the source placed at the bottom left, right and center of the lens.By depositing an array of tiny, metallic, U-shaped structures onto a dielectric material, a team of researchers in China has created a new artificial surface that can bend and focus...

Genetically modified tobacco plants as an alternative for producing bioethanol

Tobacco, a high-density crop which is mown several times throughout its cycle, can produce as much as 160 tonnes of fresh matter per hectare and become a source of biomass...