In the 1980s, scientists captured the precise mechanics of a protein machine. It looked strange, to researchers its tall thin structure with stubby legs invoked the enchanted broomstick that stole the show in "The Sorcerer's Apprentice" segment of Disney's 1940 Fantasia film.
If surveys are accurate, up to 20 percent of students have taken Modafinil (Provigil), a psychostimulant embraced by "lifehackers" in the naturalistic crowd, to boost their ability to study and improve their chances of exam success.
It is claimed, mostly by other students and readers of New York Magazine, that Modafinil is a 'smart' drug. Yet that isn't the case. Just like people without celiac disease are actually damaging their health giving up gluten and replacing it with the extra sugar, extra fat, hydroxypropyl methyl cellulose and xanthan gum found in gluten-free foods, healthy students who take Modafinil instead find their performance impaired by the drug.
In hydraulic fracturing - fracking - a mixture of sand, water and chemicals is injected into deep wells to release fossil fuels. This has led to environmental corporation claims that the reduced emissions from natural gas are being offset environmentally by surfactants.
A surfactant is basically a detergent. It reduces the surface tension between water and oil, allowing for more oil to be extracted from porous rock underground.
A University of Colorado Boulder study has found there is little to fear. The surfactant chemicals found in samples of fracking fluid collected in five states were no more toxic than substances commonly found in homes - including organic products.
In the last 30 years, the United States has grown more food using less land and with less environmental strain than ever believed possible. Fertilizers are better, pesticides are better and genetic modification has led to less need for both.
But some scientifically developing nations, including much of Europe, are still using more antiquated approaches, and then means a lot of nitrogen. Nitrogen boosts plant growth and yield even on poor soils, which helps plants avoid the typical characteristics of nitrogen deficiency - stunted growth and pale or yellow leaves - but in environmentally intensive approaches like organic farming, the left over nitrogen can be substantial.
Hey, does anyone want this comet?For the first time, mankind has successfully landed on a comet - a journey over 10 years in the making.After a seven-hour final descent, Rosetta’s Philae probe signaled from the surface of Comet 67P/Churyumov–Gerasimenko and the message arrived on Earth at 16:03 GMT, completing the longest part of a 4 billion mile journey through the solar system.The landing site, named Agilkia and located on the head of the bizarre double-lobed object, was chosen based on images and data collected at distances of 30–100 km from the comet. Those first images soon revealed the comet as a world littered with boulders, towering cliffs and daunting precipices and pits, with jets of gas and dust streaming from the surface.
The Six Billion Dollar Man is getting a little bit closer, not just to movie theaters, but in real life.
A new development toward a prosthetic retina could help counter conditions that result from retinal degeneration, a life-altering health issue for many people, especially as they age.
Trans fats are bad, they damage metabolic health in kids, according to experts and policy makers. So they were banned. Happy Meals too. And drinks with sugar.
It's fashionable in nutritional circles to demonize sodas but they also embrace a lot of unsubstantiated food fads. How much real prospective fact-finding has gone into their beliefs?Not much, it is instead epidemiology putting two curves next to each other and declaring causation.
FK506 binding protein 51 (FKBP51) is an Hsp90 co-chaperone and regulator of the glucocorticoid receptor, and consequently of stress physiology. It regulates acute and chronic effects of treatment with antidepressants via autophagic pathways (processes by which cells break down and recycle their components) in mice and is linked to the clinical response to antidepressants in humans, according to a new paper.
Did you spend those pre-school years telling your child how smart and wonderful they are? School is going to be an unwelcome dose of reality.
While we all want kids to be self-confident, unrealistic perceptions of academic abilities can be harmful, a new study of eighth-graders finds. The more one student feels unrealistically superior to another, the less the two students like each other.
When it comes to human life, we never think about culling the herd, instead the goal is to keep as many people alive and healthy as possible.
But in nature, that isn't the best approach. Some plant diseases attack trees and crops and can hurt lumber and food production, but pathogens that kill tree seedlings can actually make forests more diverse.
Policy makers and amateur psychology pundits think "necessity is the mother of invention" - and sometimes it is, that is why that became a saying, but plain old opportunity matters a lot. Natural gas had been around for 70 years, for example, and the United States has plenty of coal, but hydraulic fracturing, a modern form of extraction, has made natural gas cheaper and led to reduced greenhouse gas emissions, a competitive advantage and a 'win' for the environment - it was developed due to opportunity, not necessity.
As baby boomers, originally the children born in 1946, after soldiers returned home from World War II in 1945 but later extended out to be an entire generation, move into old age, the financial burden of Alzheimer's disease in the United States will skyrocket to $1.5 trillion from current from $307 billion
estimates, according to health policy scholars at the USC Leonard D. Schaeffer Center for Health Policy and Economics.
According to the U.S. Census Bureau, in 2012, 43.1 million Americans were 65 and older, constituting 14 percent of the population. By 2050, that number will more than double to 83.7 million, constituting 21 percent of the population.
Acute rejection after kidney transplantation occurs in about 15% of patients despite immunosuppressive therapy and this rejection is usually heralded by an increase in the patient's serum creatinine, a marker of kidney function. A kidney biopsy is then performed to confirm whether rejection is taking place.
Yet elevated creatinine is not sufficiently sensitive to identify all early rejection or specific enough to prevent some unnecessary kidney biopsies, so a noninvasive means of identifying acute rejection is needed.
