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281 articles from FRIDAY 27.4.2012
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FRIDAY 27. APRIL, 2012
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23:58
The real CSI: what happens at a crime scene?
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23:48
Even Presidential Science Advisers Can Give Boring Lectures
Prominent legislator confesses to being a science-dropout in college -
23:35
Clearwire Plans 31-City LTE Roll-Out By Mid-2013
Clearwire will launch high-speed advanced LTE in 31 U.S. metropolitan markets -- including Chicago, Los Angeles, New York City, San Francisco and Seattle -- beginning in the first half of 2013."After collaborating closely with Sprint over the past few months, we have finalized the identification of the first 5,000 sites we intend to build as part of our larger LTE overlay of up to 8,000 sites and have officially kicked off the build," Clearwire CEO Erik Prusch said Thursday. "The initial processes for equipment testing and site preparation are now under way."
Unlike LTE rivals AT&T and Verizon, which are focused solely on providing LTE services directly to their subscribers, Clearwire also intends to enter into LTE wholesale agreements with other U.S. service providers. Leap Wireless' Cricket Communications agreed to a five-year LTE spectrum-capacity deal with Clearwire last month.
Clearwire intends to use a more efficient but incompatible form of long-term evolution data networking known as time division duplexing, or TDD-LTE, compared with the more common frequency division duplexing, or FDD-LTE, used by most U.S. carriers.
The wireless industry is seeing explosive growth in mobile broadband demand, which is driving the need for more spectrum capacity and attracting new entrants to the market, Prusch said.
"It is evident in the reports from other operators and more importantly, we see it in our own results," Prusch told investors during a conference call. "Clearwire's high capacity LTE advanced-ready network will sit at the intersection of these two trends."
A More Robust Pipeline We asked Clearwire to explain the advantages that the carrier will be able to offer in comparison with rival LTE service offerings. According to a company spokesperson, one of the carrier's top assets is the 160 megahertz of spectrum capacity that Clearwire already holds in the top 100 U.S. cities, on average.
"Due to...
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23:30
Blustery winds are sending blizzards of blossom whirling around, although this month's rains came just in time to get plants growing and prevent trees from developing stunted leaves in drought-stricken areas. How much more rain will fall may depend on a fascinating competition between the oak and ash to see which one will open their leaves first, as weatherlore says "Oak before ash we'll have a splash, Ash before oak we're in for a soak". The race is currently running neck-and-neck – oaks are more sensitive to temperature and got off to a flying start in the warm weather of March, but slowed down in the cool weather this April and the ashes are now catching up.
The warm March also got some bluebells flowering ridiculously early, even as far north as Inverness. But this month the usual carpets of bluebells in woodlands have been very patchy, especially in southern Britain, and other classic spring flowers, such as primroses, have also been somewhat disappointing. The blame may be the dry conditions in March and winter or last year's drought.
One flower of April that thrives on rain is the snake's head fritillary, found growing in water meadows. The flowers have a fabulous purple and lilac chequered pattern and look like a Tiffany lamp shade on a reading light. The plant is now becoming increasingly rare as water meadows disappear, but a famous place to see them is Magdalen College Meadow in the heart of Oxford.
guardian.co.uk © 2012 Guardian News and Media Limited or its affiliated companies. All rights reserved. | Use of this content is subject to our Terms & Conditions | More Feeds
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23:25
See Dazzling Venus At Its Brightest This Week
Although Venus is always one of the brightest objects in the sky, this week it is at its brightest. -
23:23
Space Shuttle Enterprise Arrives in New York City (Pictures)
NASA's first shuttle buzzed the Big Apple today on the way to its new home atop an aircraft carrier in the Hudson River. -
23:21
Lowly Rat Gnaws & Chews to Top of the Rodent World
Rats and their close relatives, including mice, make up nearly a quarter of known mammal species. New research offers a clue to these rodents' success: their bite. -
23:20
Dot Earth Blog: A Critique of the Broken-Record Message of 'Green Traditionalists'
An environmental writer examines the rift between green traditionalists and green modernists.
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23:15
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22:48
In a city understandably wary of low-flying aircraft, New Yorkers and tourists alike watched with joy and excitement Friday as space shuttle Enterprise sailed over the skyline on its final flight before it becomes a museum piece.
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22:42His body showed telltale signs that he suffered from Hand-Schuller-Christian disease.
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22:34
DNA fingerprinting enters 21st century
Researchers have created a three-step algorithm, lobSTR, that in one day accurately and simultaneously profiles more than 100,000 short tandem repeats in one human genome sequence -- a feat that previous systems could never complete.
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22:34The most transparent, lightweight and flexible material ever for conducting electricity has just been invented. Called GraphExeter, the material could revolutionize the creation of wearable electronic devices, such as clothing containing computers, phones and MP3 players.
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22:33Aging may seem unavoidable, but that's not necessarily so when it comes to the brain. So say researchers based on counterintuitive evidence that it is what you do in old age that matters when it comes to maintaining a youthful brain rather than what you did earlier in life.
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22:29
NEW YORK — Hundreds of space shuttle fans braved the chilly temperatures and biting wind Friday morning (April 27) along the Hudson River here to catch a glimpse of NASA's prototype orbiter as it flew past the museum it will soon call home.
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22:24
Japan's NEC sees $1.36 billion net loss
Japanese IT firm NEC said Friday it lost $1.36 billion in the year to March as asset write-downs and tax payments hit its bottom line, even as operating profit rose. -
22:24(AP) -- House Republicans and Democrats expressed optimism Friday about sending a cybersecurity bill to President Barack Obama this year despite significant disagreements with the Senate and the White House.
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22:24As any crime show buff can tell you, DNA evidence identifies a victim's remains, fingers the guilty, and sets the innocent free. But in reality, the processing of forensic DNA evidence takes much longer than a 60-minute primetime slot.
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22:24Twitter chief Dick Costolo met on Friday with US Secretary of State Hillary Clinton as Internet age technologies play growing roles in world affairs.
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22:24The Internet domain name "revolution" was on hold Friday due to a flaw that let some aspiring applicants peek at unauthorized information at the registration website.
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22:24(AP) -- Yahoo's patent battle with Facebook is getting nastier.
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22:24(AP) -- Shares of Zynga Inc. declined further on Friday, even after the online game maker reported first-quarter results that surpassed Wall Street's expectations. Nervous investors are looking for any signs of a slowdown for the young company, which completed its initial public offering in December.
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22:24White House wrestles with proposed congressional boosts to research
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22:24Listen to a roundup of some of our favorite stories from this week
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22:23From the ocean's biggest fish to tiny sea slugs with big color, the stars of an annual contest help reveal "the ocean through other eyes."
Naposledy aktualizované zdroje
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BBC Science/Nature (dnes, 01:07)
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Technology Review Feed - Tech Review Top Stories (dnes, 00:17)
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CBC - Technology & Science News (21. 5, 19:01)
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EurekAlert (21. 5, 06:00)
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NASA (17. 5, 02:56)
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TIME (27. 7, 08:30)
