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Birds Sing Louder Amidst the Noise and Structures of the Urban Jungle
Sparrows, blackbirds and the great
tit are all birds known to sing at
a higher pitch in urban
environments. It was previously
believed that these birds sang at
higher frequencies in order to
escape the lower frequencies
... > full story
- more on:
Heart Beats to the Rhythm of a Circadian Clock
Sudden cardiac death --
catastrophic and unexpected fatal
heart stoppage -- is more likely
to occur shortly after waking in
the morning and in the late night.
In a new study, an international
consortium of researchers explains
the molecular linkage between the
... > full story
- more on:
NASA's Spitzer Finds Solid Buckyballs in Space
Astronomers using data from NASA's
Spitzer Space Telescope have, for
the first time, discovered
buckyballs in a solid form in
space. Prior to this discovery,
the microscopic carbon spheres had
been found only in gas form in the
cosmos. ... > full story
- more on:
Earth's Clouds Are Getting Lower, NASA Satellite Finds
Earth's clouds got a little lower
-- about one percent on average --
during the first decade of this
century, finds a new NASA-funded
university study based on NASA
satellite data. The results have
potential implications for future
global climate. ... > full story
- more on:
Tiny, Implantable Medical Device Can Propel Itself Through Bloodstream
For 50 years, scientists had
searched for the secret to making
tiny implantable devices that
could travel through the
bloodstream. Engineers have now
demonstrated a wirelessly powered
device that just may make the
... > full story
- more on:
Off Switch for Pain? Chemists Build Light-Controlled Neural Inhibitor
Pain? Just turn it off! It may
sound like science fiction, but
researchers have now succeeded in
inhibiting pain-sensitive neurons
on demand, in the laboratory. The
crucial element in their strategy
... > full story
- more on:
Recharge Your Cell Phone With a Touch? New Nanotechnology Converts Body Heat Into Power
Never get stranded with a dead
cell phone again. A promising new
technology called Power Felt, a
thermoelectric device that
converts body heat into an
electrical current, soon could
... > full story
- more on:
Neuroscientists Identify How the Brain Works to Select What We (Want To) See
If you are looking for a
particular object -- say a yellow
pencil -- on a cluttered desk, how
does your brain work to visually
locate it? For the first time,
neuroscientists have identified
how different neural regions
... > full story
- more on:
Stratospheric Superbugs Offer New Source of Power
Bacteria normally found 30
kilometers above Earth have been
identified as highly efficient
generators of electricity.
Bacillus stratosphericus -- a
microbe commonly found in high
concentrations in the stratosphere
-- is a key component of a new
... > full story
- more on:
Caught in the Act: Scientists Discover Microbes Speciating
Not that long ago in a hot spring
in Kamchatka, Russia, two groups
of genetically indistinguishable
microbes decided to part ways.
They began evolving into different
species – despite the fact
that they still encountered one
... > full story
- more on:
Roll over headlines to view top news summaries:
- Birds Sing Louder in Urban Jungle
- Heart Beats to Rhythm of a Circadian Clock
- Spitzer Finds Solid Buckyballs in Space
- Earth's Clouds Are Getting Lower
- Tiny Medical Device Travels Bloodstream
- Off Switch for Pain?
- Recharge Your Cell Phone With a Touch?
- How Brain Selects What We (Want To) See
- Stratospheric Superbugs: New Source of Power?
- Scientists Discover Microbes Speciating
- more top science stories
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Top Medical News
Is There a General Motivation Center in the Depths of the Brain?
Researchers have identified the part of the brain driving motivation during actions that combine physical and mental effort: the ventral ... > full story
- Faster Way to Catch Cells: New Microfluidic Device Could Be Used to Diagnose and Monitor Cancer and Other Diseases
- New Way to Tap Largest Remaining Treasure Trove of Potential New Antibiotics
- Exposure to Micronutrients Pre-Pregnancy Associated With Gene Modifications in Offspring
- World of Warcraft Boosts Cognitive Functioning in Older Adults
- more top health stories
Top Technology News
'Miracle Material' Graphene Is Thinnest Known Anti-Corrosion Coating
New research has established the "miracle material" called graphene as the world's thinnest known coating for protecting metals against ... > full story
- New Twist on Nanowires: Technology Can Control Composition and Structure of These Tiny Wires as They Grow
- Technique Creates Piezoelectric Ferroelectric Nanostructures
- Gold Coaxed Into Nanowires to Allow Inexpensive Detection of Poisonous Industrial Gases
- Fastest Wind from Stellar-Mass Black Hole
- more top technology stories
Top Environment News
Low Levels of Fallout from Fukushima, U.S. Study Finds
Fallout from the 2011 Fukushima Dai-ichi nuclear power facility in Japan was measured in minimal amounts in precipitation in the United States in about 20 percent of 167 sites sampled in a nationwide U.S. ... > full story
More Science Headlines
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5 am EST
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How Cancer Cells Change Once They Spread to Distant Organs
February 22, 2012 — Oncologists have known that in order for cancer cells to spread, they must transform themselves so they can detach from a tumor and spread to a distant organ. Now, scientists have revealed critical steps in what happens next -- how these cells ... > full story -
Newly Identified Oral Bacterium Linked to Heart Disease and Meningitis
February 22, 2012 — A novel bacterium, thought to be a common inhabitant of the oral cavity, has the potential to cause serious disease if it enters the bloodstream, according to a new ... > full story -
Fried Food Risks: Toxic Aldehydes Detected in Reheated Oil
February 22, 2012 — Researchers have been the first to discover the presence of certain aldehydes in food, which are believed to be related to some neurodegenerative diseases and some types of cancer. These toxic compounds can be found in some oils, such as sunflower ... > full story -
Fake Drug Sales Are Increasing on the Internet and Turning Up in Legitimate Supply Chains, Review Finds
February 22, 2012 — Criminal gangs are increasingly using the internet to market life-threatening counterfeit medicines and some have even turned up in legitimate outlets such as pharmacies, according to a newly published ... > full story -
Cocaine and the Teen Brain: New Insights Into Addiction
February 21, 2012 — When first exposed to cocaine, the adolescent brain launches a strong defensive reaction designed to minimize the drug's effects, scientists have found. Now two new studies identify key genes that regulate this response and show that interfering ... > full story
2 am EST
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Stronger Intestinal Barrier May Prevent Cancer in the Rest of the Body, New Study Suggests
February 21, 2012 — A leaky gut may be the root of some cancers forming in the rest of the body, a new study suggests. It appears that the hormone receptor guanylyl cyclase C (GC-C) -- a previously identified tumor suppressor that exists in the intestinal tract -- ... > full story -
How Good Cholesterol Turns Bad
February 21, 2012 — Researchers have found new evidence to explain how cholesteryl ester transfer protein (CETP) mediates the transfer of cholesterol from "good" high density lipoproteins (HDLs) to "bad" low density lipoproteins (LDLs). These findings point the way to ... > full story -
Stress; Healthy Aging; Workplace Health; Mental Health Research; Chronic Illness; Diseases and Conditions;
Anticipation of Stressful Situations Accelerates Cellular Aging
February 21, 2012 — The ability to anticipate future events allows us to plan and exert control over our lives, but it may also contribute to stress-related increased risk for the diseases of aging, according to a new ... > full story -
Injectable Gel Could Repair Tissue Damaged by Heart Attack
February 21, 2012 — Researchers have developed a new injectable hydrogel that could be an effective and safe treatment for tissue damage caused by heart ... > full story -
Origin of Photosynthesis Revealed: Genome Analysis of 'Living Fossil' Sheds Light on the Evolution of Plants
February 21, 2012 — Evolutionary biologists have shed light on the early events leading to photosynthesis, the result of the sequencing of 70 million base pair nuclear genome of the one-celled alga Cyanophora. They consider this study the final piece of the puzzle to ... > full story
11 pm EST
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Tohoku Grim Reminder of Potential for Pacific Northwest North American Megaquake
February 21, 2012 — The March 11, 2011 Tohoku earthquake is a grim reminder of the potential for another strong-motion mega-earthquake along the Pacific Northwest coast, geophysicists ... > full story -
Plant Toughness: Key to Cracking Biofuels?
February 21, 2012 — Along with photosynthesis, the plant cell wall is one of the features that most set plants apart from animals. A structural molecule called cellulose is necessary for the manufacture of these walls. Cellulose is synthesized in a semi-crystalline ... > full story -
Alcoholism; Educational Policy; Addiction; Educational Psychology; Children's Health; Health Policy;
Many Young People Don't Know What Constitutes Sensible Alcohol Consumption
February 21, 2012 — A new study reveals that young people do not possess the knowledge or skills required to adhere to U.S. government guidelines for responsible alcohol ... > full story -
Rare Element, Tellurium, Detected for the First Time in Ancient Stars
February 21, 2012 — Researchers has detected the element tellurium for the first time in three ancient stars. Tellurium is rare on ... > full story -
Noninvasive Method Accurately and Efficiently Detects Risk of Down Syndrome, Researchers Say
February 21, 2012 — Using a noninvasive test on maternal blood that deploys a novel biochemical assay and a new algorithm for analysis, scientists can detect, with a high degree of accuracy, the risk that a fetus has the chromosomal abnormalities that cause Down ... > full story
8 pm EST
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Is Fructose Being Blamed Unfairly for Obesity Epidemic?
February 21, 2012 — Is fructose being unfairly blamed for the obesity epidemic? Or do we just eat and drink too many calories? Researchers reviewed more than 40 published studies on whether the fructose molecule itself causes weight gain. In 31 "isocaloric" trials they ... > full story -
Step Forward in Effort to Regenerate Damaged Nerves
February 21, 2012 — Scientists have taken a step forward toward the goal of repairing nerves in such patients more effectively. In a new study, researchers report that a surprising set of cells may hold potential for nerve ... > full story -
Does Depression Contribute to the Aging Process?
February 21, 2012 — Stress has numerous detrimental effects on the human body. Many of these effects are acutely felt by the sufferer, but many more go "unseen," one of which is shortening of telomere ... > full story -
Molecular Basis of Touch Sensation: Researchers Identify New Function of a Well-Known Gene
February 21, 2012 — A gene known to control lens development in mice and humans is also crucial for the development of neurons responsible for mechanosensory function, as neurobiologists have now discovered. They found that in mice in which they had removed the c-Maf ... > full story -
Irish Mammals Under Serious Threat from 'Invasional Meltdown'
February 21, 2012 — Some of Ireland's oldest inhabitants are facing serious threat and possible extinction because of foreign species, according to ... > full story
5 pm EST
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Ant Colonies Remember Rivals' Odor and Compete Like Sports Fans
February 21, 2012 — A new study has shown that weaver ants share a collective memory for the odor of ants in rival nests, and use the information to identify them and compete, similar to how sports fans know each other instantly by their unique ... > full story -
Gases Drawn Into Smog Particles Stay There
February 21, 2012 — Airborne gases get sucked into stubborn smog particles from which they cannot escape, according to new findings. These finding could explain why air pollution models underestimate organic ... > full story -
Scientists Unlock Evolutionary Secret of Blood Vessels
February 21, 2012 — Scientists have shed light on how vertebrates evolved closed circulation systems designed to more effectively carry blood to organs and ... > full story -
Agriculture and Food; Bacteria; Microbes and More; Infectious Diseases; Today's Healthcare; Foodborne Illness;
Evolution of Staph 'Superbug' Traced Between Humans and Livestock
February 21, 2012 — A strain of the potentially deadly antibiotic-resistant bacterium known as MRSA has jumped from livestock to humans, according to a new ... > full story -
Tadpoles Adjust Buoyancy to Adapt to Different Environments
February 21, 2012 — Survival and reproduction of many aquatic and semi-aquatic animals can depend upon how well they float. Tadpoles use various strategies to attain buoyancy, depending upon their stage of development and location in still or turbulent waters. ... > full story
2 pm EST
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Detectors; Today's Healthcare; Wounds and Healing; Medical Technology; Sports Science; Medical Imaging;
Implantable, Wireless Sensors Share Secrets of Healing Tissues
February 21, 2012 — A new implantable sensor can wirelessly transmit data from the site of a recent orthopedic surgery. Inexpensive to make and highly reliable, this new sensor holds the promise of more accurate, more cost-effective, and less invasive post-surgery ... > full story -
Iconic Marine Mammals Are 'Swimming in Sick Seas' of Terrestrial Pathogens
February 21, 2012 — Parasites and pathogens infecting humans, pets and farm animals are increasingly being detected in marine mammals such as sea otters, porpoises, harbor seals and killer whales along the Pacific coast of the US and Canada, and better surveillance is ... > full story -
Robotic Dinosaurs on the Way for Next-Gen Paleontology
February 21, 2012 — Researchers are bringing the latest technological advancements in 3-D printing to the study of ancient life. Using scale models of real fossils, for the first time, they will be able to test hypotheses about how dinosaurs and other prehistoric ... > full story -
Hubble Reveals a New Class of Extrasolar Planet
February 21, 2012 — Observations by the NASA/ESA Hubble Space Telescope have come up with a new class of planet, a waterworld enshrouded by a thick, steamy atmosphere. It’s smaller than Uranus but larger than ... > full story -
Eat and Let Die: Insect Feeds on Toxic Plants for Protection from Predators
February 21, 2012 — Certain insects, such as the African variegated grasshopper or the cinnabar moth, native in Europe and Asia, feed on toxic plants in order to protect themselves from ... > full story
11 am EST
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Sleep Disorder Research; Sleep Disorders; Insomnia Research; Insomnia; Obstructive Sleep Apnea; Disorders and Syndromes;
Gene Affecting the Ability to Sleep Discovered in Fruit Flies
February 20, 2012 — On the surface, it's simple: when night falls, our bodies get sleepy. But behind the scenes, a series of complex molecular events, controlled by our genes, is hard at work to make us groggy. Now, research suggests that a newly identified gene known ... > full story -
Babies' Colic Linked to Mothers' Migraines
February 20, 2012 — A study of mothers and their young babies by neurologists has shown that mothers who suffer migraine headaches are more than twice as likely to have babies with colic than mothers without a history of ... > full story -
300-Million-Year-Old Forest Discovered Preserved in Volanic Ash
February 20, 2012 — Pompeii-like, a 300-million-year-old tropical forest was preserved in ash when a volcano erupted in what is today northern China. Paleobotanists have reconstructed this fossilized forest, lending insight into the ecology and climate of its ... > full story -
Telomere Failure, Telomerase Activation Drive Prostate Cancer Progression
February 20, 2012 — Genomic instability caused by an erosion of the protective caps on chromosomes, followed by activation of an enzyme that reinforces those caps, allows malignant cells to evade destruction and acquire more deadly characteristics, researchers ... > full story -
Blocking Telomerase Kills Cancer Cells but Provokes Resistance, Progression
February 20, 2012 — Inhibiting telomerase, an enzyme that rescues malignant cells from destruction by extending the protective caps on the ends of chromosomes, kills tumor cells but also triggers resistance pathways that allow cancer to survive and spread, scientists ... > full story
8 am EST
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High Definition Polarization Vision Discovered in Cuttlefish
February 20, 2012 — Cuttlefish have the most acute polarization vision yet found in any animal, researchers have discovered by showing them movies on a modified LCD computer screen to test their ... > full story -
Conservation Risk Highest Off Coasts of Canada, Mexico, Peru and New Zealand
February 20, 2012 — Researchers have identified conservation "hot spots" around the world where the temptation to profit from overfishing outweighs the appetite for ... > full story -
Water Management and Climate Change in Ancient Maya City
February 20, 2012 — There are new findings from inside a cave and a key cultural and religious center for the ancient ... > full story -
New Species of Bat, Hipposideros Griffini, Discovered in Vietnam
February 20, 2012 — A distinctive echolocation frequency led to the discovery of a new species of bat within the genus Hipposideros. Although this bat is similar to the species Hipposideros armiger, differences in acoustics, size, and DNA between these bats led to the ... > full story -
NASA Spacecraft Reveals Recent Geological Activity on the Moon
February 20, 2012 — New images from NASA's Lunar Reconnaissance Orbiter spacecraft show the moon's crust is being stretched, forming minute valleys in a few small areas on the lunar surface. Scientists propose this geologic activity occurred less than 50 million years ... > full story
Health & Biomedical Sciences
Health & Medicine
Can Consuming Caffeine While Breastfeeding Harm Your Baby?
Babies are not able to metabolize or excrete caffeine very well, so a breastfeeding mother's consumption of caffeine may lead to caffeine accumulation and symptoms such as wakefulness and irritability, according to an ... > full story
Mind & Brain
New Treatment for Traumatic Brain Injury Shows Promise in Animals
A new drug is showing promise in shielding against the harmful effects of traumatic brain injury in rats, according to a new ... > full story
- Neurodegenerative Diseases: Ring-Like Structure Found in 'Elongator' Protein Complex
- Military Service, Even Without Combat, Can Change Personality and Make Vets Less Agreeable, Research Suggests
- 3-D Microscopy to Aid in Cell Analysis
- Nano-Technology Uses Virus' Coats to Fool Cancer Cell
- more stories
Living Well
Brain Makes Call on Which Ear Is Used for Cell Phone
A new study finds a strong correlation between brain dominance and the ear used to listen to a cell phone, with more than 70 percent of participants holding their cell phone up to the ear on the same side as their dominant ... > full story
Biological & Earth Sciences
Plants & Animals
Researchers Take a Step Forward in Transplanting Pig Cells to Regenerate Human Cartilage
Researchers have recently studied the response of human NK cells against porcine chondrocytes. The results of the research indicate that these cells, characteristic of the innate immune system, play an important role in the rejection of ... > full story
Earth & Climate
Environmental Pollutant Level During Pregnancy Linked With Grown Daughters Who Are Overweight
The levels of the environmental pollutant perfluorooctanoic acid (PFOA) that mothers had in their blood during pregnancy increased the risk of obesity in their daughters at 20 years of ... > full story
Fossils & Ruins
Studying the Evolution of Life's Building Blocks
Studying the origin of life at its building blocks offers a unique perspective on evolution, says a ... > full story
Physical & Applied Sciences
Space & Time
Sheep in Wolf-Rayet's Clothing: New Image of Planetary Nebula Hen 3-1333
It's well known that the universe is changeable: even the stars that appear static and predictable every night are subject to change. A new image from the NASA Hubble Space Telescope shows planetary nebula Hen 3-1333. Planetary nebulae have nothing ... > full story
Matter & Energy
Observing Single Atoms During Relaxation Toward Equilibrium
Scientists have succeeded for the first time in simulating the dynamic behavior of strongly correlated individual atoms in solids. They were able to string atoms in so-called optical lattices and observe their dynamic behavior, which is determined ... > full story
Computers & Math
Seven Adult-Sized Humanoid Robots Together for First Time in the U.S.
Seven adult-sized humanoid robots took the stage during Drexel University's celebration of National Engineers Week in a first-of-its-kind assembly of robotic technology. Their presence -- together in one place -- is a unique ... > full story
- Tongue Drive System Goes Inside the Mouth to Improve Performance and User Comfort
- Single-Atom Transistor Is End of Moore's Law; May Be Beginning of Quantum Computing
- Toward Better Electronics: Researchers Develop New Way to Oxidize Promising Graphene
- How the Tiger Got Its Stripes: Proving Turing's Tiger Stripe Theory
- more stories
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