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		<title>Softpedia News - Science</title>
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		<description>Softpedia News - Science</description>
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		<language>en-us</language>
		<copyright>2001 - 2008 Softpedia. All rights reserved.</copyright>
		<pubDate>Tue, 13 May 2008 18:56:46 GMT</pubDate>
		<lastBuildDate>Tue, 13 May 2008 18:56:46</lastBuildDate>
		<category>News</category>
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		<ttl>30</ttl>
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			<title>Softpedia News</title>
			<link>http://news.softpedia.com/</link>
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		<item>
<title>Viagra Could Fix the Heart</title>
<link>http://news.softpedia.com/news/Viagra-Could-Fix-the-Heart-85474.shtml</link>
<description><![CDATA[We could say that Viagra is on the way to save lives. And it&#039;s not about sexual life; Viagra (sildenafil) could prolong the lives of people suffering from muscular dystrophy, as pointed out by a new research published in the journal Proceedings of the National Academy of Sciences. Just as it works against impotence the drug may also prevent heart failure in patients diagnosed with muscular dystrophy. 

Muscular dystrophy is a hereditary disease characterized by a severe wasting of the mus...]]></description>
<pubDate>Tue, 13 May 2008 18:51:01 GMT</pubDate>
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<guid>http://news.softpedia.com/news/Viagra-Could-Fix-the-Heart-85474.shtml</guid>
</item><item>
<title>A Very Tall Bull: 1.98 m (5 ft, 7 in) Tall</title>
<link>http://news.softpedia.com/news/A-Very-Tall-Bull-1-98-m-5-ft-7-in-Tall-85440.shtml</link>
<description><![CDATA[Today, the shoulder height of a large domestic cow is around 1.5 m (5 ft). Despite this, their wild ancestors, the aurochs, were huge beasts that reached on average 1.8 m (6 ft) tall at the withers. Between 1931 and 1938, Dr. Lutz Heck, director of the Berlin Zoo, attempted to recreate the aurochs starting from domestic cattle, through the cross breeding of the most primitive known cattle breeds. The result is the Heck cattle, greatly resembling the extinct aurochs (Bos primigenius), but still a...]]></description>
<pubDate>Tue, 13 May 2008 18:11:01 GMT</pubDate>
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<guid>http://news.softpedia.com/news/A-Very-Tall-Bull-1-98-m-5-ft-7-in-Tall-85440.shtml</guid>
</item><item>
<title>New Machine Can Tell Your Age</title>
<link>http://news.softpedia.com/news/New-Machine-Tells-Your-Age-85452.shtml</link>
<description><![CDATA[Teenage years are the "best" when it comes to becoming hooked on tobacco. Add to that the fact that adolescents can hardly tell the difference between what it right and what is wrong and you will see why puffing on a cigarette makes many young girls and boys feel hotter and cooler. However, the Japanese have come up with their own solution to this problem: the 570,000 cigarette vending machines in Japan may soon be able to assess the age of the buyer, based on the count of the wrinkles, crow&#03...]]></description>
<pubDate>Tue, 13 May 2008 18:06:01 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/New-Machine-Tells-Your-Age-85452.shtml</guid>
</item><item>
<title>Old Invisibility Cloak, New Material</title>
<link>http://news.softpedia.com/news/Old-Invisibility-Cloak-New-Material-85514.shtml</link>
<description><![CDATA[All previous invisibility cloak projects claimed at some point in time that a three-dimensional optical light cloak can be built. I won&#039;t deny that this is true, although I haven&#039;t bumped into any invisible objects lately which leads me to believe that this attempt has failed. Now, a new three-dimensional optical cloak seems to be emerging from the University of California, but this time it’s already built, although some remain skeptical towards its light bending capabilities.

Natur...]]></description>
<pubDate>Tue, 13 May 2008 14:49:00 GMT</pubDate>
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<guid>http://news.softpedia.com/news/Old-Invisibility-Cloak-New-Material-85514.shtml</guid>
</item><item>
<title>Egyptian Gods and Christianity</title>
<link>http://news.softpedia.com/news/Egyptian-Gods-and-Christianity-85507.shtml</link>
<description><![CDATA[The pantheon of the ancient Egyptians was rich in diverse deities. The question inevitably arises: how could this polytheist religion influence later monotheist religions?

The Sun God

The main Egyptian deity was Amon Re, the king of all gods and the Sun God. The Sun had a central position in the religion of the ancient Egyptians. First, it was represented as the golden scarab Hepri, symbolizing the coming into being. Then, the hieroglyph of the Sun, or Ra (Re), appeared as a circle with a ...]]></description>
<pubDate>Tue, 13 May 2008 14:21:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Egyptian-Gods-and-Christianity-85507.shtml</guid>
</item><item>
<title>New ISS Water Recovery System Leaves for Kennedy Space Center</title>
<link>http://news.softpedia.com/news/New-ISS-Water-Recovery-System-Leaves-for-Kennedy-Space-Center-85502.shtml</link>
<description><![CDATA[The permanent crew on board the International Space Station is now formed of only three astronauts, but it will soon be able to support a complement of six, meaning that it will require a new water reclamation system to recycle the water used on board. The newly built water recovery systems, which will be set to fit the space station, have left NASA&#039;s Marshall Space Flight Center yesterday and will arrive at the Kennedy Space Center where they will be subjected to final flight preparations....]]></description>
<pubDate>Tue, 13 May 2008 13:56:00 GMT</pubDate>
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<guid>http://news.softpedia.com/news/New-ISS-Water-Recovery-System-Leaves-for-Kennedy-Space-Center-85502.shtml</guid>
</item><item>
<title>Mass Extinctions Blamed on the Sun&#039;s Path Through the Galaxy</title>
<link>http://news.softpedia.com/news/Mass-Extinctions-Blamed-on-Sun-039-s-Path-Through-the-Galaxy-85492.shtml</link>
<description><![CDATA[As it travels through the Milky Way, the Sun experiences a periodical oscillation in relation to the galactic plane, meaning that the solar system intersects with some of the densest areas of the galaxy. This in turn can send comets and asteroids our way and determine catastrophic impacts with the Earth, such as that which killed the dinosaurs some 65 million years ago. The same impacts could help spread life to other regions of the galaxy.

According to calculations, the Sun passes through th...]]></description>
<pubDate>Tue, 13 May 2008 13:31:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Mass-Extinctions-Blamed-on-Sun-039-s-Path-Through-the-Galaxy-85492.shtml</guid>
</item><item>
<title>Alien Life Is Definitely Out There, Astronauts Say</title>
<link>http://news.softpedia.com/news/Alien-Life-is-Definitely-Out-There-Astronauts-Say-85481.shtml</link>
<description><![CDATA[The crew participating in the STS-123 mission, on board NASA&#039;s space shuttle Endeavor – which had the role of carrying the first section of JAXA&#039;s space laboratory Kibo along with the Canadian maintenance robot Dextre to the International Space Station – have recently participated in a news conference in Tokyo where they expressed their opinions regarding the possibility of life existing elsewhere except for Earth.

"If we push back boundaries far enough, I&#039;m sure eventually we&...]]></description>
<pubDate>Tue, 13 May 2008 12:32:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Alien-Life-is-Definitely-Out-There-Astronauts-Say-85481.shtml</guid>
</item><item>
<title>Help Wanted, Looking for Lander Wreck</title>
<link>http://news.softpedia.com/news/Help-Wanted-Looking-for-Lander-Wreck-85469.shtml</link>
<description><![CDATA[The Mars Polar Lander was a robotic mission to Mars, scheduled to land near the south polar region of the Red Planet and conduct scientific investigations related to the clime, the soil and the ice in that respective area. In 1999, the probe finally reached Mars and began its descent towards the surface. Contact was lost during landing, probably due to a high speed impact with the surface and after nine year the MPL is still missing.

Since not even the wreckage of the spacecraft was found, NA...]]></description>
<pubDate>Tue, 13 May 2008 10:52:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Help-Wanted-Looking-for-Lander-Wreck-85469.shtml</guid>
</item><item>
<title>How Uranium Enrichment Works</title>
<link>http://news.softpedia.com/news/How-Uranium-Enrichment-Works-85457.shtml</link>
<description><![CDATA[Uranium enrichment basically refers to the separation process between the uranium-238 and the uranium-235 isotopes. Because only uranium-235 can be used for fission reactions – such as those experienced in nuclear weapons and nuclear powered reactors – and uranium-235 makes up for less than 1 percent of the whole uranium reserve on Earth, engineers must use an enrichment process to extract the fissionable material.

How it works

Uranium cannot exist freely on Earth because it is highly reac...]]></description>
<pubDate>Tue, 13 May 2008 10:15:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/How-Uranium-Enrichment-Works-85457.shtml</guid>
</item><item>
<title>Prolonged Heating Could Stop Plate Tectonics</title>
<link>http://news.softpedia.com/news/Prolonged-Heating-Could-Stop-Plate-Tectonics-85449.shtml</link>
<description><![CDATA[It’s quite obvious that the Earth is going through a climate change that may have effects far more serious than a slight heating of the atmosphere. A prolonged heating, as a new study suggests, could bring our planet into a situation similar to that of Venus, whose crust became locked in place.

"The heat required goes far beyond anything we expect from human-induced climate change, but things like volcanic activity and changes in the Sun&#039;s luminosity could lead to this level of heating. ...]]></description>
<pubDate>Tue, 13 May 2008 09:33:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Prolonged-Heating-Could-Stop-Plate-Tectonics-85449.shtml</guid>
</item><item>
<title>A Special Earth Versus Dark Energy</title>
<link>http://news.softpedia.com/news/A-Special-Earth-Versus-Dark-Energy-85433.shtml</link>
<description><![CDATA[The universe is expanding. Not only that, but this expansion seems to be accelerating and is now blamed by physicists on a strange form of energy called dark energy. The problem with dark energy, as it is with dark matter, is that we can&#039;t seem to find any direct evidence of its existence. What if this cosmic acceleration expansion can be explained through some other phenomenon and dark energy is just another product of our imagination? Well, let&#039;s see.

According to theorist Robert ...]]></description>
<pubDate>Tue, 13 May 2008 08:39:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/A-Special-Earth-Versus-Dark-Energy-85433.shtml</guid>
</item><item>
<title>Stress Reaction: Women Get Depressed, Men Drink Alcohol</title>
<link>http://news.softpedia.com/news/Stress-Reaction-Women-Get-Depressed-Men-Drink-Alcohol-85431.shtml</link>
<description><![CDATA[What they say about men being from Mars and women from Venus is now an almost established fact, as is also that they have different brains and different behaviors. However, this becomes all the more obvious when it comes to them coping with stress. Women facing stressful situations are more prone to depression and anxiety, while men in the same situation have an alcohol-craving response, as revealed by a new study to be published in the July issue of Alcoholism: Clinical & Experimental Research....]]></description>
<pubDate>Tue, 13 May 2008 08:35:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Stress-Reaction-Women-Get-Depressed-Men-Drink-Alcohol-85431.shtml</guid>
</item><item>
<title>The First Victim of Global Warming: the Narwhal</title>
<link>http://news.softpedia.com/news/The-First-Victim-of-the-Global-Warming-the-Narwhal-85423.shtml</link>
<description><![CDATA[The polar bear is indeed a more iconic animal than the narwhal and, on top of that, despite being classified as marine, we can see it mostly on land. This may explain why people have been focusing more on it than on other Arctic animals, when warning about the danger of extinction caused by global warming. With all this, a new research published in the Ecological Applications journal shows which species would be the first victim: the narwhal. 

The narwhal is a cetacean with a long spiral tusk...]]></description>
<pubDate>Tue, 13 May 2008 08:02:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/The-First-Victim-of-the-Global-Warming-the-Narwhal-85423.shtml</guid>
</item><item>
<title>Measuring the Temperature of the Distant Universe with a Molecule</title>
<link>http://news.softpedia.com/news/Measuring-the-Temperature-of-the-Distant-Universe-with-a-Molecule-85415.shtml</link>
<description><![CDATA[With the help of the Very Large Telescope, ESO astronomers have recently obtained an ultraviolet signature of carbon monoxide molecules inside a well hidden galaxy located 11 billion light years away from Earth. The VLT used its UVES spectrograph for a period of 8 hours to study the galaxy, during which time it obtained an accurate measurement of the cosmic temperature of that remote era. This was done by analyzing the spectral imprint left by the interstellar gas of the galaxy on the light give...]]></description>
<pubDate>Tue, 13 May 2008 07:42:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Measuring-the-Temperature-of-the-Distant-Universe-with-a-Molecule-85415.shtml</guid>
</item><item>
<title>Breastfeeding Keeps Rheumatism at Bay</title>
<link>http://news.softpedia.com/news/Breastfeeding-Saves-Moms-of-Rheumatism-85413.shtml</link>
<description><![CDATA[Breastfeeding is good not only for the baby, but it is also beneficial for the new moms. A new Swedish research published in the Annals of Rheumatic Diseases shows that women who breastfeed for at least 13 months reduce their chance of rheumatoid arthritis by 50%, compared to those who have never breastfed. Comparatively, women breastfeeding for 1 to 12 months displayed a risk decrease of 25%. 

The team at Malmo University Hospital conducted all analyses on a group made of 136 women with rheu...]]></description>
<pubDate>Tue, 13 May 2008 07:21:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Breastfeeding-Saves-Moms-of-Rheumatism-85413.shtml</guid>
</item><item>
<title>Black Holes Are Not Black</title>
<link>http://news.softpedia.com/news/Black-Holes-Are-Not-Black-85405.shtml</link>
<description><![CDATA[Theory says that black holes are objects of extreme mass and density, having powerful gravitational fields able to warp space and time, and surrounded by a boundary called the event horizon, beyond which matter and energy cannot escape the gravitational pull and will ultimately fall in the singularity. In addition to this, in the 1970s, Stephen Hawking stated that black holes were not entirely black, meaning that they did emit some form of energy through the event horizon into the surrounding me...]]></description>
<pubDate>Tue, 13 May 2008 06:52:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Black-Holes-Are-Not-Black-85405.shtml</guid>
</item><item>
<title>Human Sacrifice at the Tombs of Mysterious Columbian Civilizations</title>
<link>http://news.softpedia.com/news/Human-Sacrifice-at-the-Tombs-of-Mysterious-Columbian-Civilizations-85402.shtml</link>
<description><![CDATA[Back in January, construction workers stumbled in the Usme district (southeast of Bogotá, Colombia) upon an ancient burial site made of about one thousand tombs belonging to two mysterious civilizations. The site spans over an area of 12 acres (5 hectares) and could host victims of human sacrifice.

"The possible victim is a young woman who seems to have been buried alive. Her mouth is open as if in terror, and her hands seem contracted as if she had tried grabbing hold of something. Another t...]]></description>
<pubDate>Tue, 13 May 2008 06:45:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Human-Sacrifice-at-the-Tombs-of-Mysterious-Columbian-Civilizations-85402.shtml</guid>
</item><item>
<title>The Causes of Sleepwalking</title>
<link>http://news.softpedia.com/news/The-Causes-of-Sleepwalking-85332.shtml</link>
<description><![CDATA[Getting no sleep can be the main reason of one’s zombie-like behavior, meaning, for sleepwalking. "Sleepwalkers should keep a regular bedtime to avoid unwanted evening strolls," said Antonio Zadra of the Université de Montréal, lead researcher of a study published in the Annals of Neurology journal, a study that connected sleep loss and sleepwalking in predisposed individuals. 

Sleepwalking or somnambulism is experienced by 4% of adults, and its effects can range from mental confusion to bout...]]></description>
<pubDate>Mon, 12 May 2008 18:11:01 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/The-Causes-of-Sleepwalking-85332.shtml</guid>
</item><item>
<title>Pubic Lice on the Verge of Extinction</title>
<link>http://news.softpedia.com/news/Pubic-Lice-on-the-Verge-of-Extinction-85324.shtml</link>
<description><![CDATA[Lice need their "forest" in order to survive. However, just like the Brazilian Amazon forests, another one seem to be lost forever, thanks to the influence of modern civilization... A British research published in the June 2006 issue of the Sexually Transmitted Infections journal revealed that crab rates in Leeds area declined first in women and several years after in men, in a context in which other STDs were stationary or increasing. It appears that the bikini wax treatment (also called "The B...]]></description>
<pubDate>Mon, 12 May 2008 18:06:08 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Pubic-Lice-on-the-Verge-of-Extinction-85324.shtml</guid>
</item><item>
<title>4 Things about Gannets and Boobies</title>
<link>http://news.softpedia.com/news/4-Things-About-Gannets-and-Boobies-85396.shtml</link>
<description><![CDATA[1. Gannets and boobies are coastal seabirds famous for their dive for fish. They have been thought to be related to the pelicans, but DNA analysis revealed that their closest relatives are the snakebirds and, more distantly, the cormorants. The oldest known relative of the gannet is the Odontopterix, which lived  50 Ma ago; its relatives had wingspans of 6 m (20 ft). The Plotopteridae were a type of wingless gannets resembling penguins that lived in Oligocene-Miocene (33 to 5 Ma ago).  

The p...]]></description>
<pubDate>Mon, 12 May 2008 15:27:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/4-Things-About-Gannets-and-Boobies-85396.shtml</guid>
</item><item>
<title>World&#039;s Most Powerful Computer Will Be Housed by NASA</title>
<link>http://news.softpedia.com/news/World-039-s-Most-Powerful-Computer-Will-be-Housed-by-NASA-85393.shtml</link>
<description><![CDATA[The device will be developed and built by the Intel Corporation and the SGI, and will be installed at NASA Advanced Supercomputing facility at the Ames Research Center. It is expected to become operational by 2009, when it will have a computational power of one petaflops. Then, until 2012, the new supercomputer will receive upgrades that are supposed to bring it to a computational power of 10 petaflops. By comparison, NASA&#039;s fastest computer, Columbia, operates at only 88.88 teraflops.

O...]]></description>
<pubDate>Mon, 12 May 2008 15:03:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/World-039-s-Most-Powerful-Computer-Will-be-Housed-by-NASA-85393.shtml</guid>
</item><item>
<title>Children and Physical Activity</title>
<link>http://news.softpedia.com/news/Children-and-Physical-Activity-85384.shtml</link>
<description><![CDATA[Obesity kills over 160,000 US citizens annually. In just 25 years, the number of obese people in the US boomed from 15 % to 33 %. Oppositely, in 1980, 8% of the British women and 6% of men were entered in the obese category. By 2004, this percentage had increased to 24% for both sexes. Obesity is accompanied by two or three of the following issues: diabetes and cardiovascular disease, high blood pressure, elevated levels of blood triglycerides (saturated fats) and low levels of the artery-protec...]]></description>
<pubDate>Mon, 12 May 2008 14:25:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Children-and-Physical-Activity-85384.shtml</guid>
</item><item>
<title>Space Science Data Transmission Four Times Cheaper than SMS</title>
<link>http://news.softpedia.com/news/Space-Science-Data-Transmission-Four-Times-Cheaper-than-SMS-85381.shtml</link>
<description><![CDATA[You think SMS is cheap? Check this out. According to University of Leicester space scientist Dr Nigel Bannister, sending a message via SMS is more expensive than downloading data on the Hubble Space Telescope. To be more exact, it’s about four times more expensive to send a text message – which by the way costs only 5 pennies – than downloading one megabyte of scientific information on NASA&#039;s Hubble Telescope. What a rip-off!

"The bottom line is that texting is at least 4 times more expe...]]></description>
<pubDate>Mon, 12 May 2008 14:14:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Space-Science-Data-Transmission-Four-Times-Cheaper-than-SMS-85381.shtml</guid>
</item><item>
<title>5 Things about Hepatits B</title>
<link>http://news.softpedia.com/news/5-Things-About-Hepatits-B-85375.shtml</link>
<description><![CDATA[1. Hepatitis B, like hepatitis A, is a viral infection of the liver; the only difference is that the former is more severe because of its capacity to turn chronic. The infection can be detected via blood samples. The virus of the hepatitis B is transmitted from one person to another via body liquids, including blood, semen, and vaginal fluids (including menstrual blood), but also from mother to child during pregnancy. Still, most people get the infection during adolescence and adult age. 

2. ...]]></description>
<pubDate>Mon, 12 May 2008 13:46:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/5-Things-About-Hepatits-B-85375.shtml</guid>
</item><item>
<title>Plastic Bonding Enzymes Could &#039;Eat&#039; Dirt Away</title>
<link>http://news.softpedia.com/news/Plastic-Bonding-Enzymes-Could-039-Eat-039-Dirt-Away-85373.shtml</link>
<description><![CDATA[Wouldn&#039;t it be wonderful if clothes washed themselves and the dirt on the kitchen floor simply disappeared? Don&#039;t lose hope, there may still be a way to do so! US researchers have recently shown that active enzymes similar to those contained inside biological clothing detergents could be used to coat surfaces so that any stains be simply &#039;eaten&#039; away.

The process used by them to coat plastic surfaces with active enzymes is based on the spin coating technique used to cover ...]]></description>
<pubDate>Mon, 12 May 2008 13:41:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/Plastic-Bonding-Enzymes-Could-039-Eat-039-Dirt-Away-85373.shtml</guid>
</item><item>
<title>About Stepparents</title>
<link>http://news.softpedia.com/news/About-Stepparents-85365.shtml</link>
<description><![CDATA[We are all well familiar with the story of Snow White and Cinderella so that we have already formed an opinion about stepparents. For many, the word "mother" revokes the image of the natural mother and no other woman can come to replace her. How do things really stand when it comes to stepparents? Is the new mom or dad a chance or a "second-hand" choice for the little child? 

Today, the rate of divorce is soaring. Children, who brought so much happiness in the household at the onset of family...]]></description>
<pubDate>Mon, 12 May 2008 13:08:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/About-Stepparents-85365.shtml</guid>
</item><item>
<title>How Touch Screens Work</title>
<link>http://news.softpedia.com/news/How-Touch-Screens-Work-85358.shtml</link>
<description><![CDATA[There are three ways through which a touch screen display can detect whether or not you are actually touching the display surface and the relative position of the object touching it: the resistive, capacitive or surface acoustic wave system.

The resistive system operates by using a design involving a glass layer on top of which a resistive metallic layer is placed. The two layers are separated by spacers and come in contact only when pressure is applied. Electrical current is pumped through b...]]></description>
<pubDate>Mon, 12 May 2008 12:45:00 GMT</pubDate>
<source url="http://news.softpedia.com/newsRSS/Science-2.xml"></source>
<guid>http://news.softpedia.com/news/How-Touch-Screens-Work-85358.shtml</guid>
</item><item>
<title>NASA and JAXA Say No to Sonic Booms</title>
<link>http://news.softpedia.com/news/NASA-and-JAXA-say-No-to-Sonic-Booms-85343.shtml</link>
<description><![CDATA[The problem with supersonic aircrafts today is that when they surpass the speed of sound they create a so-called sonic boom, an acoustic phenomenon similar to the one generated by a relatively large detonation. It is just a sound, but it packs a mighty punch. Just imagine hearing a sudden explosion in the middle of the night, while you&#039;re sleeping, as a jet goes to supersonic speed over your house. Most of the time, such events never happen because flight paths ensure that the sonic booms n...]]></description>
<pubDate>Mon, 12 May 2008 11:01:00 GMT</pubDate>
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<title>Tuning Nanomaterials with Pressure</title>
<link>http://news.softpedia.com/news/Tunning-Nanomaterials-with-Pressure-85329.shtml</link>
<description><![CDATA[Nanomaterials play a high role in today&#039;s electronic devices ranging from transistors all the way to lasers and solar-energy conversion devices. A new technique developed at the Lawrence Livermore National Laboratory could allow researchers to manipulate nanomaterials and their fundamental properties only by applying pressure.

The experimental rig used by the LLNL researchers uses a cadmium selenide quantum dot solid placed under a pressure 70,000 times that of the Earth&#039;s atmospher...]]></description>
<pubDate>Mon, 12 May 2008 10:04:00 GMT</pubDate>
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