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Science

+ - Want to get dumber? Keep smoking that weed->

Submitted by gambit3
gambit3 (463693) writes "Teenagers who regularly smoke cannabis are putting themselves at risk of permanently damaging their intelligence, according to a landmark study.
Researchers found persistent users of the drug, who started smoking it at school, had lower IQ scores as adults.

They were also significantly more likely to have attention and memory problems in later life, than their peers who abstained.

Furthermore, those who started as teenagers and used it heavily, but quit as adults, did not regain their full mental powers, found academics at King’s College London and Duke University in the US."

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AT&T

+ - AT&T's about-face on 4G->

Submitted by gambit3
gambit3 (463693) writes "AT&T told regulators a pretty big whopper last year while fighting for its doomed T-Mobile merger. One of the deal's fiercest battle points was 4G access outside major cities. Without T-Mobile, AT&T said it was "very unlikely" that it would expand 4G-LTE service beyond the 80% coverage threshold it already planned to reach by 2013.

Fast-forward 11 months. AT&T says that its $14 billion network investment will allow its 4G service to cover 300 million Americans, the overwhelming majority of the U.S. population, or 96% by 2014."

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Science

+ - Hypersonic X-51A WaveRider lost over the Pacific->

Submitted by gambit3
gambit3 (463693) writes "After approximately 15 seconds of flight, the experimental aircraft designed to fly at six times the speed of sound was unable to maintain control during a test run Tuesday and was lost, the Air Force said in a statement.

The unmanned X-51A WaveRider was expected to reach Mach 6 after it was dropped by a B-52 bomber off the Southern California coast near Point Mugu, but a faulty control fin compromised the flight.

"It is unfortunate that a problem with this subsystem caused a termination before we could light the Scramjet engine," Charlie Brink, the X-51A program manager said in a statement. "All our data showed we had created the right conditions for engine ignition and we were very hopeful to meet our test objectives.""

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+ - Nature: global temeratures are a falling trend-> 3

Submitted by sosume
sosume (680416) writes "An article in Nature shows that the temperature in the roman times were actually higher than current temperatures. A team lead by dr Esper of the University of Mainz has researched tree rings and concluded that over the past 2,000 years, the forcing is up to four times as large as the 1.6Wm2 net anthropogenic forcing since 1750 using evidence based on maximum latewood density data from northern Scandinavia, indicating that this cooling trend was stronger (0.31C per 1,000years, ±0.03C) than previously reported, and demonstrate that this signature is missing in published tree-ring proxy records. This is a big setback for global warming scientists."
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The Almighty Buck

+ - Why you can't find an online review of your Real Estate Broker->

Submitted by
gambit3
gambit3 writes "When it comes to critiquing products and services, American consumers are spreading opinions with abandon online. Don't like the lobster bisque at your local seafood place? Air your displeasure on Urbanspoon. Love the way your new leaf blower chases away the neighbor's cats? Rave about it on Amazon.com. Indeed, according to recent surveys, more than one in four adults participates in scoring either services or products on some kind of rating site — all the more remarkable because such forums didn't even exist a decade ago.

But when shoppers turn to real estate, and specifically to the nation's army of nearly 2 million agents, the Web is practically a blank page; in many ways, critics say, it might as well be 1992. If consumers want to know how many homes an agent has sold, how long those homes were on the market, what they sold for versus the asking price and, especially, one agent's performance compared with those of his or her peers, there's no place online to dig up reliable answers. Why?"

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+ - Tree-rings prove climate was WARMER in Roman and Medieval times than it is now -->

Submitted by Anonymous Coward
An anonymous reader writes "Professor Dr. Jan Esper's group at the Institute of Geography at JGU used tree-ring density measurements from sub-fossil pine trees originating from Finnish Lapland to produce a reconstruction reaching back to 138 BC.

In so doing, the researchers have been able for the first time to precisely demonstrate that the long-term trend over the past two millennia has been towards climatic cooling.

‘We found that previous estimates of historical temperatures during the Roman era and the Middle Ages were too low,’ says Esper. ‘Such findings are also significant with regard to climate policy, as they will influence the way today's climate changes are seen in context of historical warm periods.'"

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Businesses

+ - Google to Require Retailers to Pay to be in Google Shopping Results->

Submitted by
gambit3
gambit3 writes "In a move to squeeze more cash out of its lucrative Web-search engine, Google is converting its free product-search service into a paid one.
Online retailers will now have to bid to display their products on Google's Shopping site. Currently, retailers include their products for free by providing Google with certain data about the products. Google then ranks those products, such as cameras, by popularity and price.
"Google Shopping will empower businesses of all sizes to compete effectively—and it will help shoppers turn their intentions into actions lightning fast," wrote Sameer Samat, a Google vice president, in a statement."

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+ - In America, 46% of people hold a creationist view of human origins-> 1

Submitted by Anonymous Coward
An anonymous reader writes "The latest Gallup poll is out and it finds that 46% of Americans hold the view that God created humans in their present form within the last 10 000 years. According to Gallup the percentage who hold this view has remained unchanged since 1982, when they first started asking the question.

Roughly 33% of Americans believe in divinely guided evolution, and 15% believe that humans evolved without any supernatural help."

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Science

+ - 'Huge' water resource exists under Africa-> 2

Submitted by gambit3
gambit3 (463693) writes "Scientists say the notoriously dry continent of Africa is sitting on a vast reservoir of groundwater. They argue that the total volume of water in aquifers underground is 100 times the amount found on the surface.
Across Africa more than 300 million people are said not to have access to safe drinking water.
Freshwater rivers and lakes are subject to seasonal floods and droughts that can limit their availability for people and for agriculture. At present only 5% of arable land is irrigated."

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Science

+ - Store Umbilical Cord blood, and Where?

Submitted by gambit3
gambit3 (463693) writes "My wife and I are expecting our first child in 3 months, and one of the decisions we still have to make is whether to store our baby's cord blood. Even if we decide the upfront cost is worth it, there is still the question of using a public bank or a private one (and which one to trust), and whether to also store umbilical cord tissue for stem cells.
Does the slashdot community have any experience and suggestions?"
Bug

+ - Researchers find flaw in FTL Experiment->

Submitted by
gambit3
gambit3 writes "In September, scientists in Geneva made the startling announcement that they had recorded ghostly particles known as neutrinos apparently traveling faster than the speed of light—a finding that challenged Einstein and threatened to upend the entire field of modern particle physics.

It now turns out that a flawed cable could have been responsible for garbling the result."

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Privacy

+ - Supreme Court: GPS devices equivalent of a search,-> 2

Submitted by
gambit3
gambit3 writes "The Supreme Court says police must get a search warrant before using GPS technology to track criminal suspects.

The court ruled in the case of Washington, D.C., nightclub owner Antoine Jones. A federal appeals court in Washington overturned his drug conspiracy conviction because police did not have a warrant when they installed a GPS device on his vehicle and then tracked his movements for a month."

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