treehugger.com: by Matthew McDermott

A little bit late to the game, but glad they’ve arrived… The world’s largest exporter of meat products, Brazil’s JBS-Frisboi has pledged to no longer buy cattle raised from areas of the deforested Amazon which were cleared after September 23rd of this year, Greenpeace reports. Additionally, they will not work with any farms found to be using slave labor (what year is it again?!?) or raising cattle in designated protected areas or on indigenous lands: [ more ]

discovermagazine.com: by Carl Zimmer

Meet the forgotten 90 percent of your brain: glial cells, which outnumber your neurons ten to one. And no one really knows what they do.

Some of the common words we use are frozen mistakes. The term influenza comes from the Italian word meaning “influence”—an allusion to the influence the stars were once believed to have on our health. European explorers searching for an alternate route to India ended up in the New World and uncomprehendingly dubbed its inhabitants indios, or Indians. Neuroscientists have a frozen mistake of their own, and it is a spectacular blunder. In the mid-1800s researchers discovered cells in the brain that are not like neurons (the presumed active players of the brain) and called them glia, the Greek word for “glue.” Even though the brain contains about a trillion glia—10 times as many as there are neurons—the assumption was that those cells were nothing more than a passive support system. Today we know the name could not be more wrong. [ more ]

discovermagazine.com: by Carl Zimmer

Neuroscientists explore the mind’s sexual side and discover that desire is not quite what we thought it was.

On April 11, 1944, a doctor named T. C. Erickson addressed the Chicago Neurological Society about a patient he called Mrs. C. W. At age 43 she had started to wake up many nights feeling as if she were having sex—or as she put it to Erickson, feeling “hot all over.” As the years passed her hot spells struck more often, even in the daytime, and began to be followed by seizures that left her unable to speak. Erickson examined Mrs. C. W. when she was 54 and diagnosed her with nymphomania. He prescribed a treatment that was shockingly common at the time: He blasted her ovaries with X-rays. [ more ]

wired.com: By Jonah Lehrer

A revolution in the science of social networks began with a stash of old papers found in a storeroom in Framingham, Massachusetts. They were the personal records of 5,124 male and female subjects from the Framingham Heart Study. Started in 1948, the ongoing project has revealed many of the risk factors associated with cardiovascular disease, including smoking and hypertension. [ more ]

wired.com: By Alexis Madriga

Fish that use electric fields to sense their environments dim their signals to save energy during the day when they are resting.

Sternopygus macrurus, a South American river fish, is a natural practitioner of energy efficiency. It can reshape the charged-molecule channels in its electricity-producing cells to tone down its electrical signature within a matter of minutes. [ more ]

wired.com: By Brandon Keim

By genetically modifying the brains of songbirds for the first time, scientists may have a devised useful new tool for studying neurological growth and healing in humans.

“Songbirds have become a classic tool for studying vocal learning and neuron replacement. This will bring those two topics into the molecular age,” said neuroscientist Fernando Nottebohm of Rockefeller University, author of a study published September 28 in the Proceedings of the National Academy of Sciences. [ more ]

newscientist.com: by Anil Ananthaswamy

Champions of free will, take heart. A landmark 1980s experiment that purported to show free will doesn’t exist is being challenged.

In 1983, neuroscientist Benjamin Libet asked volunteers wearing scalp electrodes to flex a finger or wrist. When they did, the movements were preceded by a dip in the signals being recorded, called the “readiness potential”. Libet interpreted this RP as the brain preparing for movement. [ more ]

india-server.com:

A futuristic scientist from America has predicted that man can become immortal within 20 years by means of nanotechnology and better understanding of the body mechanism.

Ray Kurzweil, who is famous for his predictions which he had made on technologies about 10 years back, has written in The Sun ,”I and many other scientists now believe that in around 20 years we will have the means to reprogramme our bodies’ stone-age software so we can halt, then reverse, ageing. Then nano-technology will let us live forever.” [ more ]

breitbart.com:

Paralysed rats whose spinal cords had been severed from their brains were made to run again using a technique that scientists say can work for people, according to a study released Sunday.

Consistent electrical stimulation and drugs enabled the rats to walk on their hind legs on a treadmill — bearing the full weight of the body — within a week of being paralysed.

With the addition of physical therapy, the rodents were able after several weeks to walk and run without stumbling for up to 30 minutes, reported the study, published in the journal Nature Neuroscience. [ more ]

Scientists are finally starting to find medical information of value.

technologyreview.com: By Emily Singer

Last year, when more than 100 of the world’s top geneticists, technologists, and clinicians converged on Cold Spring Harbor Laboratory in New York for the first annual Personal-Genomes conference, the main focus was James Watson’s genome. The codiscoverer of the structure of DNA was the first to have his genome sequenced and published (aside from Craig Venter, who used his own DNA for the private arm of the human genome project.) Watson sat in the front row of the lecture hall as scientists presented their analysis of his genome. They paid special attention to the number of single-letter variations or small insertions and deletions in his DNA–clues as to whether he had a genetic variation that slightly boosted his risk for heart disease or cancer. But there was very little usable information in the genome. [ more ]