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7,296 articles from APRIL 2012
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MONDAY 30. APRIL, 2012
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23:51
ScienceShot: Crickets Sing Deeper When Cold
When their energy is sapped, tree crickets can't chirp as high -
23:49
Observatory: Volcanic Activity Played Role in Mars’ Valleys, Study Suggests
High-resolution images of the Athabasca Valles near the Martian equator reveal coiling spiral patterns that closely resemble lava flows on the Big Island of Hawaii.
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23:49Male bowerbirds, through the extravagant structures they build to woo females, actually cultivate plant life, a study has found.
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23:49A study of mating behavior in one species of orb-web spiders, who can mate at most twice in one lifetime, has revealed interesting patterns of male monogamy.
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23:48
Verizon Expands Prepaid with $80 Smartphone Plan
In a sign that it is expanding its portfolio of prepaid devices and plans, the nation's leading mobile carrier will begin offering a no-contract smartphone tomorrow for $80 including unlimited talk, text and data. And it is also offering prepaid for a 4G LTE data hotspot.The new plan is cheaper than the current prepaid plan for smartphones, which does not include unlimited talk and text. Those customers pay $64.99 up front for 450 minutes plus $30 for unlimited data. The average device cost of $199 is also higher than the Samsung Illusion announced today at $169.99.
'Plans Evolve' The news comes shortly after Verizon released first-quarter figures showing that its 93 million customers now include 5 million prepaid connections, having risen sharply from a net loss of 27,000 in the first quarter of last year to a gain of 233,000 in the first quarter of 2012. Postpaid subscribers, meanwhile, fell by 44.7 percent.
"We have always had prepaid plans but they evolve because the kinds of people who use them evolve," Verizon spokeswoman Brenda Raney told us. She said that while in the past prepaid was only for value-conscious customers, today they are being used by people who operate cash businesses, by exchange students or by families that want to teach teenagers how to manage their monthly usage. (When prepaid limited voice plans run out the phone won't make calls until additional minutes are purchased for the interim until the next billing cycle.)
Verizon also has a $50 flat-fee prepaid plan for basic phones and in some areas, as a promotion, offers that rate for a limited number of smartphones.
The 3G, touchscreen Samsung Illusion is a modest offering compared with recent releases by the South Korean tech giant, now the leading handset supplier in the world. The Illusion has a 3.5-inch screen, currently...
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23:42Sudden cardiac death is far more prevalent among young athletes than previously believed, recent research has shown.
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23:39A study has found that in women at high risk of premature birth, a pessary may delay birth until a newborn has a greater chance of survival.
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23:33
Why Do We Work Eight Hours a Day?
Making the work day manageable became a demand of the Chicago labor movement in the late 1860s. -
23:32The fast-growing abuse of prescription drugs has reached maternity wards in hospitals across the country.
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23:15
SpaceX Test Fires Private Rocket Bound for Space Station
The private spaceflight company SpaceX successfully test fired the rocket that will launch the first-ever commercial space capsule to the International Space Station today (April 30), after a slight delay that was caused by an apparent computer glitch.
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23:11
Spring is in the air, and baby panda-making is in the minds of zookeepers at the Smithsonian's National Zoo — if not those of their panda charges.
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22:44
Scaling-up production of biopolymer microthreads
Development of new therapies for a range of medical conditions -- from common sports injuries to heart attacks -- will be supported by a new production-scale microthread extruder. The system is in the final stages of testing and validation and will soon be manufacturing thousands of hair-like biopolymer threads a day.
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22:43Biologists suggest the delay in recovery of Atlantic cod on the eastern Scotian Shelf could be attributed to increased predation by grey seals or other governing factors and not the effect of forage fish as previously thought.
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22:43Perched atop the sheer coastal cliffs of Ireland's Aran Islands, ridges of giant boulders have puzzled geologists for years. What forces could have torn these rocks from the cliff edges high above sea level and deposited them far inland? While some researchers contend that only a tsunami could push these stones, new research finds that plain old ocean waves, with the help of some strong storms, did the job.
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22:43Lactoferrin is an important iron-binding protein with many health benefits. The major form of this powerful protein, is secreted into human biofluids (e.g. milk, blood, tears, saliva), and is responsible for most of the host-defense properties.
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22:43Contemplating death doesn't necessarily lead to morose despondency, fear, aggression or other negative behaviors, as previous research has suggested. Following a review of dozens of studies, University of Missouri researchers found that thoughts of mortality can lead to decreased militaristic attitudes, better health decisions, increased altruism and helpfulness, and reduced divorce rates.
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22:42Occupational exposure to formaldehyde in Chinese men may be linked to reduced fertility, reports a new article.
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22:42Chemical engineers have discovered a new, high-yield method of making the key ingredient used to make plastic bottles from biomass. The process currently creates the chemical p-xylene with an efficient yield of 75-percent.
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22:37The number of babies born exposed to addictive drugs while in the womb is increasing, a new study suggests.
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22:28Nokia demonstrates a way to access the Internet using an old part of the radio spectrum.
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22:24
From decade to decade: What's the status of our groundwater quality?
There was no change in concentrations of chloride, dissolved solids, or nitrate in groundwater for more than 50 percent of well networks sampled in a new analysis by the USGS that compared samples from 1988-2000 to samples from 2001-2010. For those networks that did have a change, seven times more networks saw increases as opposed to decreases. -
22:24Part helicopter, part airplane, the Office of Naval Research (ONR)-sponsored Flexrotor vertical takeoff and landing unmanned aerial vehicle (UAV) enters the next development phase April 30 in delivering improved maritime surveillance capability.
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22:24(Phys.org) -- Not all acts of altruism are alike, says a new study. From bees and wasps that die defending their nests, to elephants that cooperate to care for young, a new mathematical model pinpoints the environmental conditions that favor one form of altruism over another.
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22:24It's very difficult to kick a star out of the galaxy.
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22:24University of Florida lepidopterist Andrei Sourakov has spent his life's work studying moths and butterflies. But it was his teenage daughter, Alexandra, who led research on how color impacts butterflies' feeding patterns.
Naposledy aktualizované zdroje
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Guardian Unlimited Science (dnes, 13:00)
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CBC - Technology & Science News (dnes, 12:55)
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BBC Science/Nature (dnes, 12:03)
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Technology Review Feed - Tech Review Top Stories (dnes, 06:56)
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EurekAlert (dnes, 06:00)
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NASA (dnes, 04:11)
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National Geographic News (dnes, 01:02)
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TIME (27. 7, 08:30)
