Intermittent fasting, and fasting in general, has been a popular fad health gimmick, but the science isn't on its side. Instead, proponents believe mice are little people so if mice weaned on starvation diets lived longer, people would also.
Jumping is not about fun and games for insect larvae. They must do it to survive. This manoeuvre is all about finding a shady spot to develop in, according to researchers from Kyushu University in Japan, who led research into the jumping behavior of a minute parasitic wasp, published in Springer's journal The Science of Nature.
The use of jumping as a means of movement has only been observed in a few species of parasitic wasp larvae, suggesting that this behavior does not easily evolve. One such wasp is the three millimeter long Bathyplectes anurus. This parasite is used as a form of biological pest control against alfalfa weevil (Hypera postica), a destructive agricultural pest that attacks legumes.
(Boston) - For salt marshes, hurricanes are just another day at the beach.
These coastal wetlands are in retreat in many locations around the globe--raising deep concerns about damage to the wildlife that the marshes nourish and the loss of their ability to protect against violent storms. The biggest cause of their erosion is waves driven by moderate storms, not occasional major events such as Hurricane Sandy, researchers from Boston University and the United States Geological Survey now have shown.
A new analysis indicates that many patients continue working after being diagnosed with metastatic cancer, but a heavy burden of symptoms may prevent them from doing so. Published early online in CANCER, a peer-reviewed journal of the American Cancer Society, the study illustrates the need to treat difficult symptoms so that patients can maintain their employment.
Improved treatments have helped to prolong the lives of patients with metastatic cancer. Because individuals diagnosed with metastatic cancer may wish to continue to work, understanding how their illness affects their employment may help patients make adjustments.
Many people in Russia know about the Dima Rogachev Centre - particularly those who have faced the challenge of child cancer. The centre is Europe's largest pediatric cancer care facility and is named after a boy with advanced cancer who wrote a letter to President Putin inviting him to visit; the invitation was accepted, and after the visit, the decision was made to build a state-of-the-art Centre for Pediatric Hematology, Oncology and Immunology, based in the Research Institute of Pediatric Hematology. The new centre was named after Dmitry 'Dima' Rogachev who died two years later at the age of 12 while the centre was still under construction.
Doctors Seeking Help from Mathematicians
Both acute kidney injury and chronic kidney disease were common in patients undergoing major vascular surgical procedures and were associated with an increase in long-term cardiovascular-specific death compared with patients with no kidney disease, according to a study published online by JAMA Surgery.
Azra Bihorac, M.D., M.S., of the University of Florida, Gainesville, and colleagues examined the association between acute kidney injury (AKI), chronic kidney disease (CKD) and long-term cardiovascular-specific mortality among patients who underwent inpatient vascular surgery between January 2000 and November 2010 at a tertiary care teaching hospital. Final follow-up was completed July 2014 to assess survival through January 2014.
The discovery of exceptionally well-preserved, tiny fossil seeds dating back to the Early Cretaceous corroborates that flowering plants were small opportunistic colonizers at that time, according to a new study.
Angiosperms, or flowering plants, diversified during the Early Cretaceous, about 100 to 130 million years ago. Based on evidence from living and fossil plants, the earliest angiosperms are usually thought to have had small stature. New data from the fossil record presented here strongly support this notion, but also indicates key differences from modern flowering plants.
The small seed embryos -- less than 0.3 millimeters in size -- and their surrounding nutrient storage tissues in well-preserved seeds were found in eastern North America and Portugal.
In recent years, a complicated discussion over which direction solar cells should face -- south or west -- has likely left customers uncertain about the best way to orient their panels. Now researchers are attempting to resolve this issue by developing solar cells that can harvest light from almost any angle, and the panels self-clean to boot. Their report appears in the journal ACS Nano.
Commercial solar panels work best when sunlight hits them at a certain angle. Initially, experts had suggested that solar panels face south to collect the most energy from the sun. But an influential 2013 report by Pecan Street, an energy-research organization, advised that systems tilt westward to maximize efficiency.
As nations across the globe negotiate how to reduce their contributions to climate change, researchers at Penn are investigating just how the coming changes will impact the planet. What's clear is that the effect extends beyond simple warming. Indeed, the very physics and chemistry of the oceans are also shifting, and are forecast to change even more in the coming decades.
These changes have implications for, among other things, the single-celled organisms that comprise the base of the ocean's food web and are responsible for half of the world's photosynthetic activity: phytoplankton. Not only are phytoplankton sensitive to changes in climate, they also contribute to those changes, as they can remove carbon from the atmosphere and store it deep in the ocean when they die.
Essen, Germany, December 16, 2015 - In a large population-based study of randomly selected participants in Germany, researchers found that participants with anemia, defined as haemoglobin 13 g/dl in men and 12 g/dl in women, showed lower performances in verbal memory and executive functions. Furthermore, mild cognitive impairment (MCI) occurred almost twice more often in participants diagnosed with anemia. This study is published in the Journal of Alzheimer's Disease.
There is a bad habit in environmental circles, created by the academics that feed them information: Discovering a new species and immediately declaring it endangered. More evidence-based scientists recognize that over 99.99999% of all species that have gone extinct we never knew about in the first place so declaring everything endangered and claiming a domino effect undermines public acceptance of science. Nonetheless, a new paper adds to the former effort by saying we should forget species extinction and talk about species rarity.
Climate researchers have published direct observations of the reduction and melting of the Greenland Ice Sheet during the latest 110 years, a step up from flawed numerical estimates used for all previous claims. In a recent paper, the researchers claim they can pinpoint where the ice sheet is particularly sensitive and what controls the loss of glacier ice in Greenland - and they close a gap in IPCC's estimate of global sea level budget.
Supplement fads come and go and the most recent one to take the U.S. by storm has been to list vitamin D as both cause and cure of just about everything - and make some money selling vitamin supplements. It takes a while for science to catch up to spurious correlations and a recent study of elderly men found no evidence that obstructive sleep apnea increased in severity (or prevalence) as a result of vitamin D deficiency, despite what Joe Mercola or other health frauds are claiming this week.
The researchers also found no evidence to support a link between vitamin D deficiency and increased risk of OSA in non-obese study participants.
