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71 articles from SUNDAY 1.7.2012
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SUNDAY 1. JULY, 2012
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23:29
Weatherwatch: those languid 'dog days of summer' will be welcome
The "dog days of summer" officially start tomorrow – a sultry period of heat when your shirt sticks to your back. It lasts until 11 August, although some authorities quote a different period, 23 July to 23 August. There are reasons for this that has nothing to do with the weather. The expression comes from ancient Greek, adopted by the Romans. The belief was that the rising of the "dog star" Sirius in conjunction with the sun caused the extra Mediterranean heat that made life so uncomfortable. Sirius, part of the constellation Canis Major (greater dog), is the brightest star in the heavens.
Sirius appeared to the ancients to emit enough energy to be capable of enhancing the heat of the sun, hence the "dog days."The discrepancy in the dates for this phenomenon can be partly attributed to the fact the constellations have moved and Sirius is no longer visible at the same times. The expression remains though, and as late as the 19th century in England it was the time when "wine turned sour, dogs grew mad and all other creatures became languid." The Romans used to sacrifice a brown dog to appease the Gods, but the Britons did not adopt this practice.
Perhaps the description has lasted so long, despite its spurious origins, because July is the warmest and driest month in Britain. The average night and day temperatures are higher than June or August. After the recent rains a few dog days might be welcome.
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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23:19
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22:23
Beyond base-pairs: Mapping the functional genome
Researchers have now mapped, for the first time, a significant portion of the functional sequences of the mouse genome, the most widely used mammalian model organism in biomedical research.
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22:05
NASA Space Shuttle Trainer Lands at Seattle's Museum of Flight
SEATTLE — Seattle's The Museum of Flight moved a nose closer to exhibiting a full-size mockup of the space shuttle on Saturday (June 30) with the delivery of the front section of a retired astronaut trainer by a large NASA cargo plane.
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21:00
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20:36
A hoard of Victorian rubbish – including champagne bottles, tennis balls, sports shoes, bowler hats, medicine jars, clay pipes and tobacco tins – has been discovered bricked up under steps leading to the Old Royal Naval College in Greenwich, London
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20:24
An error-eliminating fix overcomes big problem in '3rd-gen' genome sequencing
The next "next-gen" technology in genome sequencing has gotten a major boost. -
20:24Popularly dubbed "the book of life," the human genome is extraordinarily difficult to read. But without full knowledge of its grammar and syntax, the genome's 2.9 billion base-pairs of adenine and thymine, cytosine and guanine provide limited insights into humanity's underlying genetics.
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20:24Japan opened several solar energy parks on Sunday as a new law came into force requiring companies to purchase renewable energy at a fixed price in a push for alternatives to nuclear power.
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20:24With the advent of semiconductor transistors—invented in 1947 as a replacement for bulky and inefficient vacuum tubes—has come the consistent demand for faster, more energy-efficient technologies. To fill this need, researchers at the University of Pittsburgh are proposing a new spin on an old method: a switch from the use of silicon electronics back to vacuums as a medium for electron transport—exhibiting a significant paradigm shift in electronics. Their findings were published online in Nature Nanotechnology July 1.
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20:24For eastern Pacific populations of leatherback turtles, the 21st century could be the last. New research suggests that climate change could exacerbate existing threats and nearly wipe out the population. Deaths of turtle eggs and hatchlings in nests buried at hotter, drier beaches are the leading projected cause of the potential climate-related decline, according to a new study in the journal Nature Climate Change by a research team from Drexel University, Princeton University, other institutions and government agencies.
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20:24Researchers are hopeful that new advances in tissue engineering and regenerative medicine could one day make a replacement liver from a patient's own cells, or animal muscle tissue that could be cut into steaks without ever being inside a cow. Bioengineers can already make 2D structures out of many kinds of tissue, but one of the major roadblocks to making the jump to 3D is keeping the cells within large structures from suffocating; organs have complicated 3D blood vessel networks that are still impossible to recreate in the laboratory.
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20:24
Blaming the Brain for Chronic Back Pain
A brain scan may be able to predict whether a patient with back pain will recover or develop persistent pain -
20:21
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20:20Material similar to that used in candy decorations helps researchers pump blood into artificial tissue
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20:00Genome reveals adaptations to life at upper elevations
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19:50
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19:02
LONDON (Reuters) - Rising sea levels cannot be stopped over the next several hundred years, even if deep emissions cuts lower global average temperatures, but they can be slowed down, climate scientists said in a study on Sunday. A lot of climate research shows that rising greenhouse gas emissions are responsible for increasing global average surface temperatures by about 0.17 degrees Celsius a decade from 1980-2010 and for a sea level rise of about 2.3mm a year from 2005-2010 as ice caps and glaciers melt. ...
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18:34
The Russian Soyuz capsule undocks from the International space station on Sunday with Russian cosmonaut Oleg Kononenko, NASA's Don Pettit and Dutch ESA astronaut André Kuipers onboard
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17:03When watching the Summer Olympics, take a good look at the hands of the competitive swimmers. Chances are, their fingers will be slightly spread. Now new research finds that this hand position creates an "invisible web" of water that gives swimmers more speed.
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16:53Missing a night's sleep has the same effect on the immune system as experiencing physical stress, a new study from the Netherlands finds.
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16:17
When Killer Whales Attack: Video
Footage from 'Frozen Planet' stirs memories of a close encounter of the orca kind. -
15:53
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15:33
GENEVA (Reuters) - It has been fancifully dubbed the angel of creation and, to the particular scorn of physicists, the god particle. The Higgs Boson is said to have appeared out of the chaos of the Big Bang 13.7 billion years ago and turned the flying debris from that primeval explosion into galaxies, stars, and planets. Its formal discovery, according to a broad scientific consensus, would be the greatest advance in knowledge of the universe in decades. ...
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14:24Can a tailored suit help clinch that tricky deal at work? Get the girl? Or simply put a spring in your step? Absolutely, if you believe a year-old Paris firm that is using a 3D body scanner to bring made-to-measure to the masses.
Naposledy aktualizované zdroje
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National Geographic News (dnes, 15:17)
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BBC Science/Nature (dnes, 12:44)
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Technology Review Feed - Tech Review Top Stories (dnes, 06:23)
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NASA (24. 5, 23:17)
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CBC - Technology & Science News (24. 5, 22:19)
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Sci-Tech Today (24. 5, 20:47)
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NYT > Science (24. 5, 17:19)
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EurekAlert (24. 5, 06:00)
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TIME (27. 7, 08:30)
