New research suggests that walking at least six miles per week may protect brain size and in turn, preserve memory in old age.
For the study, 299 dementia-free people recorded the number of blocks they walked in one week. Then nine years later, scientists took brain scans of the participants to measure their brain size. After four more years, the participants were tested to see if they had developed cognitive impairment or dementia.
There is no quick fix for obesity - exercise devices on TV targeting fat are a hoax, for example. Where is the first place most people lose weight? Their face, yet no one is exercising their face.
So-called natural remedies for people desiring quick obesity fixes are also a lucrative market but a new study of medical records in Hong Kong revealed 66 cases where people were suspected to have been poisoned by a 'natural' slimming therapy. In eight cases the people became severely ill, and in one case the person died.
Intense, passionate feelings of love can provide effective pain relief on a par with painkillers or even illicit drugs like cocaine, according to a new study.
That's not to say you should rely on a string of affairs when you have a headache, but a better understanding of these neural-rewards pathways that get triggered by 'love', or winning money, could lead to new methods for producing pain relief.
Malware - malicious software written for purposes like identity theft - could get a lot more dangerous.
With so much information stored, and advancements in programming, malware programs could soon not only engage in traditional data theft or taking over a computer, but also 'steal' data on behavior patterns, a higher level of danger than easily detectable attacks.
The National Academies (the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine) announced the recipients of their 2010 Communication Awards today. Part of the Keck Futures Initiative, these awards recognize excellence in reporting and communicating science, engineering, and medicine to the general public. With support from the W.M. Keck Foundation, these $20,000 prizes have been awarded since 2003. This year's winners will be honored during a ceremony on Oct. 22 at the Keck Center in Washington, D.C.
Winners:
Baseball players will tell you that a fastball can rise - and elementary physics says it can also, the same way an airplane rises because the teardrop shape of a wing causes air to go over the top faster than below the flatter bottom, 'sucking' it into the air. Sure, if the baseball is going 200 MPH it can happen. But they don't.
Polyethylene terephthalate (PET) is the third most common synthetic polymer and accounts for about 18% of world polymer production. It is an aromatic/aliphatic polyester which possesses very practical thermal properties that are not found in the all aliphatic commodity thermoplastics polyethylene or polypropylene: a glass transition temperature (Tg) near 67°C and a melting temperature (Tm) of 265°C. But like those two, it is derived from fossil fuels: the key aromatic component of PET, terephthalic acid, is derived from petroleum, while ethylene glycol is derived from petroleum or natural gas.
A new study suggests watermelon can be an effective natural weapon against prehypertension, a precursor to cardiovascular disease. It still won't hurt to exercise, of course.
Estimates are that up to 60 percent of U.S. adults are prehypertensive or hypertensive. Prehypertension is characterized by systolic blood pressure readings of 120-139 millimeters of mercury (mm Hg) over diastolic pressure of 80-89 mm Hg. "Systolic" refers to the blood pressure when the heart is contracting. "Diastolic" reflects the blood pressure when the heart is in a period of relaxation and expansion.
What's 7 billion light years away, equivalent in weight to 800,000,000,000,000 of our Suns and holds hundreds of galaxies? It's the most galaxy cluster ever discovered, that's what.
Astronomers using the South Pole Telescope discovered the behemoth and designated it the rather unspectacular SPT-CL J0546-5345.
Redshift measures how light from a distant object has been stretched by the universe's expansion. Located in the southern constellation Pictor (the Painter), the cluster has a redshift of z=1.07. This puts it at a distance of about 7 billion light-years, meaning we see it as it appeared 7 billion years ago, when the universe was half as old as now and our solar system didn't exist yet.
Well! The last day of the squid fertilization workshop was just as exciting, in its own way, as Sunday's fishing excusion.
The workshop's dozen participants hail from Mexico, Peru, Brazil, USA, Germany, Russia, and Spain. But our passion for cephalopod reproduction is as pure as our backgrounds are diverse. That's right, we are all obsessed with squid sex. So obsessed that we will make ourselves late for lunch with concerns about the chemistry of egg masses, and debate ommastrephid paralarval nutrition well into the night.
Yesterday morning we showed each other videos of egg masses and baby squid. We cooed over Susana's paralarvae and applauded Sakurai's shockingly spherical egg masses.
