The Pew Research Center recently reported that the wealth gap between American whites and blacks is the widest since the United States began tracking the statistic in 1984 — with whites, on average, having 20 times the net worth of blacks. However, another recent study contends traditional measures of prosperity that only look at economic factors, while important, are not the best gauges of overall well-being. (more…)
*Open, grassy environments accompanied human evolution*
Scientists using chemical isotopes in ancient soil to measure prehistoric tree cover–in effect, shade–have found that grassy, tree-dotted savannas prevailed at most East African sites where human ancestors and their ape relatives evolved during the past six million years.
“We’ve been able to quantify how much shade was available in the geological past,” says University of Utah geochemist Thure Cerling, lead author of a paper titled “Woody cover and hominin environments in the past 6 million years” on the results in this week’s issue of the journal Nature. (more…)
PASADENA, Calif. –– Observations from NASA’s Mars Reconnaissance Orbiter have revealed possible flowing water during the warmest months on Mars. (more…)
About 50 to 60 percent of patients with melanoma have a mutation in the BRAF gene that drives the growth of their cancer. In clinical trials, most of these patients have responded remarkably well to two novel agents that inhibit the gene, but unfortunately, the response is almost always limited in duration, as the cancer develops a resistance to the drugs. (more…)
The theory that our universe is contained inside a bubble, and that multiple alternative universes exist inside their own bubbles – making up the ‘multiverse’ – is, for the first time, being tested by physicists.
Two research papers published in Physical Review Letters and Physical Review D are the first to detail how to search for signatures of other universes. Physicists are now searching for disk-like patterns in the cosmic microwave background (CMB) radiation – relic heat radiation left over from the Big Bang – which could provide tell-tale evidence of collisions between other universes and our own. (more…)
*2 out of 5 Smartphone Subscribers Now Use Android Platform*
RESTON, VA, August 4, 2011 – comScore, Inc., a leader in measuring the digital world, today released data from the comScore 
MobiLens service, reporting key trends in the U.S. mobile phone industry during the three month average period ending June 2011. The study surveyed more than 30,000 U.S. mobile subscribers and found Samsung to be the top handset manufacturer overall with 25.3 percent market share. Google Android continued to gain ground in the smartphone market reaching 40.1 percent market share in June.
OEM Market Share
For the three month average period ending in June, 234 million Americans ages 13 and older used mobile devices. Device manufacturer Samsung ranked as the top OEM with 25.3 percent of U.S. mobile subscribers (up 0.8 percentage points), followed by LG with 21.3 percent share (up 0.4 percentage points) and Motorola with 14.5 percent share. Apple strengthened its position at #4 with 8.9 percent share of mobile subscribers (up 1.0 percentage points), while RIM rounded out the top five with 7.9 percent share. (more…)
More than a year after the largest oil spill in history, perhaps the dominant lingering question about the Deepwater Horizon spill is, “What happened to the oil?” Now, in the first published study to explain the role of microbes in breaking down the oil slick on the surface of the Gulf of Mexico, Woods Hole Oceanographic Institution (WHOI) researchers have come up with answers that represent both surprisingly good news and a head-scratching mystery.
In research scheduled to be published in the Aug. 2 online edition of Environmental Research Letters, the WHOI team studied samples from the surface oil slick and surrounding Gulf waters. They found that bacterial microbes inside the slick degraded the oil at a rate five times faster than microbes outside the slick—accounting in large part for the disappearance of the slick some three weeks after Deepwater Horizon’s Macondo well was shut off. (more…)
COLUMBIA, Mo. – According to the Centers for Disease Control and Prevention, 25 percent of Americans have inactive lifestyles (they take fewer than 5,000 steps a day) and 75 percent do not meet the weekly exercise recommendations (150 minutes of moderate activity each week and muscle-strengthening activity twice a week) to maintain good health. After reviewing recent literature, University of Missouri researchers contend that physical inactivity is the primary cause of chronic diseases such as diabetes, obesity and fatty liver disease and that even people who set aside time for exercise regularly but are otherwise sedentary, may not be active enough to combat these diseases. Inactivity, in addition to the availability of high-caloric food has led to an increased rate of metabolic dysfunction in Americans. (more…)
