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A weather blog featuring daily news about weather, space, webcams and more

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Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries in astronomy, anthropology, biology, chemistry, climate & environment, computers, en

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Large volcanic calderas, aka supervolcanoes, are enormous craters tens of kilometers in diameter produced by giant, explosive eruptions that rank among the most violent geologic events. Geophysical studies of recently active calderas and investigations of their eruption products suggest that their magmatic systems are driven by intrusion of mantle-derived basalt in the deep crust, a process commonly referred to as magmatic underplating. - [Read more]

Researchers report that it takes at least a year for former methamphetamine users to regain impulse control. The results tell recovering substance abusers, their families and drug-treatment specialists that it can take an extended period of time for the brain functions critical to recovery to improve. - [Read more]

Scientists have performed the first DNA-based reconstruction of the giant extinct moa bird, using prehistoric feathers recovered from caves and rock shelters in New Zealand. - [Read more]

Stroke patients with obstructive sleep apnea who undergo treatment with continuous positive airway pressure following their stroke may substantially reduce their risk of death. - [Read more]

The UK experienced a North-South divide in its weather today, with Londoners sweltering through another scorching day while Britons elsewhere suffered thunderstorms.

Astronomers have found a binary star-disk system in which each star is surrounded by the kind of dust disk that is frequently the precursor of a planetary system. - [Read more]

Charles Darwin postulated that animals eat as much as possible while food is plentiful, and produce as many offspring as this would allow. However, new research shows that, even when food is abundant, intake reaches a limit. One theory for this is that animals actively limit their energy turnover to maintain a higher level of reproductive success over their lifetime. - [Read more]

If a lump is found in the breast of an adolescent girl, she often will undergo an excisional biopsy. However, breast cancer is rare in adolescents, and the vast majority of teenage breast lumps are benign. A recent study suggests that a breast ultrasound might eliminate the need for biopsy in many cases. - [Read more]

Researchers are injecting a modified herpes virus into melanoma tumors, hoping to kill the cancer cells while also bolstering the bodys immune defenses against the disease. - [Read more]

The herpes simplex virus (HSV) can infect the eye and sometimes causes so much damage that the persons cornea must be replaced with a transplant. (The cornea is the clear covering of the front of the eye that helps focus light for vision.) Doctors knew transplants were more likely to fail in people with HSV than in patients with other disorders, such as keratoconus, an abnormal steepening of the cornea. - [Read more]

In a first-of-its-kind advance toward the next generation of genetically modified foods — intended to improve consumers health — researchers in Japan are reporting that a new transgenic rice designed to fight a common pollen allergy appears safe in animal studies.  - [Read more]

Engineers used a novel underwater manufacturing technique to successfully build biomimetic cilia. The hairlike appendages mix tiny volumes of liquid to speed up biomedical reactions. - [Read more]

Torrential rains are soaking New England and causing traffic backups and power failures as the holiday weekend approaches.

El Nino may have a split personality.

Showers and thunderstorms will plague much of the Northeast, central Plains, Ohio Valley, and Florida this Fourth of July weekend. ...

When humans and animals delay reproduction because food or other resources are scarce, they may live longer to increase the impact of reproduction, according to a new study. - [Read more]

Otitis media, more commonly known as an ear infection, is the most frequently diagnosed illness in children less than 15 years of age in the United States and is the primary cause for emergency room visits. More than 80 percent of children will experience at least one ear infection before their third birthday. A new study could introduce a pain-free vaccination strategy that works against ear infections. - [Read more]

A new class of black hole, more than 500 times the mass of the Sun, has been discovered by an international team of astronomers. - [Read more]

Improvised explosive devices (IEDs), the weapons of suicide bombers, are a major cause of soldier casualties in Iraq and Afghanistan. A group of engineering undergraduate students has developed a new way to detect them. - [Read more]

Scientists are researching the potential of mass production of microalgae as a crop. - [Read more]

The pursuit of happiness characterizes the human condition. But for those suffering from stress, money trouble or chronic illness, a positive outlook on life can be difficult to find. Now, a researcher says we should look to our genes. - [Read more]

Scientists have discovered that many common genetic variants contribute to a persons risk of schizophrenia, providing the first molecular evidence that this form of genetic variation is involved in schizophrenia. The researchers also found that many of these DNA variations also are involved in bipolar disorder but not in several nonpsychiatric diseases. - [Read more]

The German shepherds died Tuesday in a car in the parking lot of police headquarters in Nottingham .

Researchers have discovered an important new insight into how a commonly prescribed drug may work to treat those infected by a parasitic flatworm. - [Read more]

A molecule called telomerase, best known for enabling unlimited cell division of stem cells and cancer cells, has a surprising additional role in the expression of genes in an important stem cell regulatory pathway. The unexpected finding may lead to new anticancer therapies and a greater understanding of how adult and embryonic stem cells divide and specialize. - [Read more]

The salamander is a superhero of regeneration, able to replace lost limbs, damaged lungs, sliced spinal cord -- even bits of lopped-off brain. Based on experiments on genetically modified axolotl salamanders, researchers show that cells from the salamanders different tissues retain the "memory" of those tissues when they regenerate, contributing with few exceptions only to the same type of tissue from whence they came. - [Read more]

Is it possible that something as insubstantial and transitory as snow could be responsible for large scale vertical movements of Earths surface and the excavation of deeply incised gorges? - [Read more]

It’s the same dilemma every morning: do you take your usual route with its frequent traffic jams, or try to get to work faster by going cross-country? And do you listen to the advice from the traffic information service, or work it out yourself? Researchers found that although we appear to be stubborn creatures of habit, good traffic information makes us a bit more adventurous. - [Read more]

Competitive sports and endurance training comes with a real -- even if rare -- twist. While most people will enjoy the benefits and pleasures of exercise, there are a few for whom regular athletic training will increase the risk of cardiac arrhythmias and even sudden death. - [Read more]

Scientists have shown, for the first time, that modern genetic technologies can solve the riddle of how gene variations lead to schizophrenia. - [Read more]

A human growth factor that stimulates blood stem cells to proliferate in bone marrow reverses memory impairment in mice genetically altered to develop Alzheimers disease, a new study finds. - [Read more]

Two Australian researchers have defined a newly recognized kind of explosive eruption, termed "neptunian," that is restricted to seafloor volcanoes. - [Read more]

A current trend in secondary science education is for students to learn by discovering for themselves how things work. Computer modeling is a teaching method that fits in nicely with this trend and also with new learning objectives such as scientific literacy, inquiry-based learning and active involvement. Researchers have demonstrated that computer modeling is particularly useful for learning complex structures but less effective for learning simple facts. - [Read more]

The Eastern U.S. was expected to continue seeing severe storm development on Thursday from a slow-moving low pressure system hovering over the Great Lakes region.

Researchers have identified the prognostic significance of the immune system in breast tumors. The research results show that patients with certain breast tumors have a better prognosis when more immune cells are present in the tumor. - [Read more]

Because females carry two copies of the X chromosome to males’ one X and one Y, they harbor a potentially toxic double dose of the over 1000 genes that reside on the X chromosome. To compensate for this imbalance, mammals such as mice and humans shut down one entire X-chromosome through a phenomenon known as X-inactivation. For almost two decades, researchers have believed that one particular gene, called Xist, provides the molecular trigger of X-inactivation. A new study disputes current scientific belief by showing that X-inactivation can occur even in the absence of a gene previously thought to be the trigger of the process. - [Read more]

It appears to be a paradox: ultra-thin material that absorbs all incident light. Nonetheless, it does exist. Researchers have demonstrated that at a thickness of 4.5 nanometer niobiumnitride (NbN) is ultra-absorbent. They have recorded a light absorption of almost 100%, while the best light absorption to date was 50%. This research brings the ideal light detector a step closer. - [Read more]

In mice, scientists have shown two types of antibiotics can cause moderate to wide-ranging changes in normally diverse, beneficial gut microbes. The findings have implications for minimizing diarrhea in vulnerable patients, and for treating inflammatory bowel disease and C. difficile. - [Read more]

Microbes and bacteria were the first living organisms on Earth, and they can be preserved in Archean silica-rich rocks. One such outcrop from western Australia, dated to 3.5 billion years ago, may hold the oldest "microfossils." - [Read more]

Local laws, insurance reimbursement and public misperceptions impede emergency medical services (EMS) workers from using best resuscitation practices, according to a new study. - [Read more]

The Yemenia Airbus 310 that crashed into the Indian Ocean near Comoros may have been attempting a go-around in rough weather for another approach when it hit the sea, a pilots association says.

The Cardiovascular Research Foundation has announced the results of the largest meta-analysis to date comparing mortality rates for drug-eluting stents versus bare metal stents. The study also compared the rates of myocardial infarction and target vessel revascularization. - [Read more]

When glaciers advanced over much of the Earths surface during the last ice age, what kept the planet from freezing over entirely? This has been a puzzle to climate scientists because leading models have indicated that over the past 24 million years geological conditions should have caused carbon dioxide levels in the atmosphere to plummet, possibly leading to runaway "icehouse" conditions. Now researchers report on the missing piece of the puzzle -- plants. - [Read more]

Scientists have discovered a new protein in the inner membrane of the cell nucleus. This protein may play an important role in cell division and now provides a new piece of the puzzle to study in cancer research. - [Read more]

The late Pliocene onset of major Northern Hemisphere glaciation is one of the most important steps in the Cenozoic global cooling. Although most attempts have been focused on high-latitude climate feedbacks, no consensus has been reached in explaining the forcing mechanism of this dramatic climate change. - [Read more]

A new report from the Institute of Medicine recommends 100 health topics that should get priority attention and funding from a new national research effort to identify which health-care services work best. - [Read more]

The Archaea are single-celled organisms and a domain unto themselves, quite apart from the so called eukaryotes (bacteria and higher organisms). Many species live under extreme conditions, and carry out unique biochemical processes shared neither with bacteria nor with eukaryotes. Methanogenic archaeans, for example, can produce methane gas out of carbon dioxide and hydrogen. - [Read more]

Positron emission tomography scans in mice can be used to determine whether a novel type of breast cancer treatment is working as intended, study shows. - [Read more]

We humans have a strong urge to reproduce, but if the environment steers us into putting off having children, we may be rewarded with both longer life and a bigger genetic footprint in future generations. - [Read more]

Viruses can cost winegrowers an entire harvest. If they infest the grapevines, even pesticides are often no use. What’s more, these chemicals are harmful to the environment. Researchers are growing plants that produce antibodies against the viruses and are thus immune. - [Read more]

Britains hottest week in years could end in a wash-out with some parts of the country at risk of flooding, forecasters warned.

The Dietary Guidelines for Americans (DGA) provide guidance to promote health and reduce risk of chronic diseases. However, what evidence is there that following the DGA optimizes health? Is this advice useful for individuals already in poor health? - [Read more]

Between the 1932 and 2008 Olympic Games, world record times of the mens 100m sprint improved by 0.6 seconds. Scientists have shown that an equivalent improvement can be achieved in mice by feeding them a diet high in a certain type of polyunsaturated fatty acid. - [Read more]

Researchers have come a step closer to understanding how cells close gaps not only during embryonic development but also during wound healing. Their study uncovers a fundamental misconception in the previous explanation for a developmental process called dorsal closure. - [Read more]

A new study finds that U.S. pediatricians have plenty of room for improvement when it comes to using a screening questionnaire to flag developmental delays in premature children. - [Read more]

Two new studies demonstrate a need for more vigilant monitoring for seizure activity among intensive care patients who may be experiencing subtle seizures that are typically unrecognized. These subtle seizures may be affecting patients prognoses and causing long-term brain damage, death and severe disability. - [Read more]

A protein known to be overly active in breast cancer can exist in a form that seems to change the structural composition of mammary tissue, potentially making it more conducive to tumor progression, say researchers. - [Read more]