Sunday, November 2, 2008

Lost Biblical Copper Mine Found?

The excavation at Khirbat en-Nahas where scientists believe they may have uncovered King Solomon's Mine (Photo from The Telegraph)

From Christian Science Monitor:

King Solomon was big on brass accessories. He ordered two enormous brass pillars, plus other brass items, for the temple the monarch commissioned for Jerusalem.

And where might all of this copper – a key ingredient in brass – have come from? Archaeologists from the US, Jordan, Britain, and Switzerland report that they have excavated an industrial-scale copper center in southern Jordan and dated it to the 9th and 10th centuries BC. If the dating stands up to further scrutiny, the peak of its smelting activity would coincide with the reigns of David and Solomon. It also would resurrect a currently discredited time frame for existence of the kingdom of Edom. The smelting center occupies a spot that lies within Edom’s boundaries. In the Old Testament, Edom was one of ancient Israel’s troublesome neighbors.

The results are likely to be controversial. In the 1980s, Bible scholars began to challenge the historical accuracy of accounts of people and events earlier than the 5th century BC, the research team says. In addition, some ceramic and radiocarbon evidence suggested that Edom didn’t emerge until the 7th century.

Read more ....

Saturday, November 1, 2008

Designer Babies: Creating The Perfect Child


From CNN:

LONDON, England (CNN) -- Bring your partner, grab a seat, pick up your baby catalog and start choosing.

Will you go for the brown hair or blond? Would you prefer tall or short? Funny or clever? Girl or boy? And do you want them to be a muscle-bound sports hero? Or a slender and intelligent book worm?

When you're done selecting, head to the counter and it's time to start creating your new child.

Does this sound like a scary thought?

With rapid advances in scientific knowledge of the human genome and our increasing ability to modify and change genes, this scenario of "designing" your baby could well be possible in the near future.

Techniques of genetic screening are already being used -- whereby embryos can be selected by sex and checked for certain disease-bearing genes. This can lead to either the termination of a pregnancy, or if analyzed at a pre-implantation stage when using In Vitro Fertilization (IVF), can enable the pregnancy to be created using only non-disease bearing genes.

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More Hidden Territory On Mercury Revealed By Messenger Spacecraft

Image of Mercury captured by MESSENGER on the probe's second approach. (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington)

From Space Daily:

ScienceDaily (Oct. 31, 2008) — A NASA spacecraft gliding over the battered surface of Mercury for the second time this year has revealed more previously unseen real estate on the innermost planet. The probe also has produced several science firsts and is returning hundreds of new photos and measurements of the planet's surface, atmosphere and magnetic field.

The Mercury Surface, Space Environment, GEochemistry, and Ranging, or MESSENGER, spacecraft flew by Mercury shortly after 4:40 a.m. EDT, on Oct. 6. It completed a critical gravity assist to keep it on course to orbit Mercury in 2011 and unveiled 30 percent of Mercury's surface never before seen by a spacecraft.

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MIT Scientists Baffled By Global Warming Theory, Contradicts Scientific Data


From Watts Up With That:


Many people have pointed me to this story, I wanted to read about it a bit before posting it. Almost two years ago, when this blog was in its very first month, I posted this story on the puzzling leveling off of global methane concentrations. FYI Methane has a “global warming potential” (GWP) 23-25 times that of CO2.

CDIAC has an interesting set of graphs on methane, the first of which shows that indeed global concentrations of CH4 through 2004 have leveled off:

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Scientists To Measure Effects Of Earthquakes, Weather On Ancient Acropolis


From L.A. Times Science:

ATHENS, Greece (AP) _ For thousands of years the Acropolis has withstood earthquakes, weathered storms and endured temperature extremes, from scorching summers to winter snow.

Now scientists are drawing on the latest technology to install a system that will record just how much nature is affecting the 2,500-year-old site. They hope their findings will help identify areas that could be vulnerable, allowing them to target restoration and maintenance.

Scientists are installing a network of fiber optic sensors and accelerographs — instruments that measure how much movement is generated during a quake.

"The greatest danger for our monuments at the moment is earthquakes," Dimitrios Egglezos, chief civil engineer in charge of the Acropolis' defensive circuit wall, told The Associated Press. So understanding how the structures react to the earth's movement is paramount.

Egglezos said six accelerographs are to be installed starting next week at various parts of the Acropolis: at the base of the hill, part of the way up where the geology changes, and on the Parthenon, the Acropolis' most famous monument, built between 447 and 432 B.C. in honor of the goddess Athena.

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Searching For Primordial Antimatter

The Bullet Cluster

From Space Daily:

Scientists are on the hunt for evidence of antimatter - matter's arch nemesis - left over from the very early Universe. New results using data from NASA's Chandra X-ray Observatory and Compton Gamma Ray Observatory suggest the search may have just become even more difficult.

Antimatter is made up of elementary particles, each of which has the same mass as their corresponding matter counterparts - protons, neutrons and electrons - but the opposite charges and magnetic properties. When matter and antimatter particles collide, they annihilate each other and produce energy according to Einstein's famous equation, E=mc2.

According to the Big Bang model, the Universe was awash in particles of both matter and antimatter shortly after the Big Bang. Most of this material annihilated, but because there was slightly more matter than antimatter - less than one part per billion - only matter was left behind, at least in the local Universe.

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Spiders and Scorpions Among World's Oldest Creatures

Ancient Creepy Crawly
A fossil spider can be seen embedded in amber. The fossil, provided by the Florida Museum of Natural History, was discovered in the Dominican Republic and dates from the Miocene epoch, some five to 23 million years ago.

From Discovery:

Oct. 31, 2008 -- If it seems like spiders, scorpions, ticks and mites have been around forever, it's because they nearly have, according to new genetic research that found these arachnids first emerged at least 400 to 450 million years ago.

The study, published in the latest issue of Experimental and Applied Acarology, extends the known world presence of these creepy crawlies by over 200 million years. The oldest fossil spider is 125 to 135 million years old, while the oldest fossil scorpion is around 200 million years old.

These invertebrates could even have emerged much earlier than this latest study determined.

"A horseshoe crab dating to 475 million years ago provided one of our anchor dates, and this crab actually looked quite modern, as did a Devonian period (416 to 359 million years ago) mite that was one very modern-looking mite," co-author Marjorie Hoy told Discovery News.

Hoy, a University of Florida entomologist, added, "I don't think the individuals just suddenly appeared on Earth, so it's likely these invertebrates are even older than we estimated."

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Scientists Prove It Really Is A Thin Line Between Love And Hate

Michael Douglas and KathleenTurner played a couple with a stormy relationship
in the 1989 film War Of The Roses

From The Independent:

The same brain circuitry is involved in both extreme emotions – but hate retains a semblance of rationality

Love and hate are intimately linked within the human brain, according to a study that has discovered the biological basis for the two most intense emotions.

Scientists studying the physical nature of hate have found that some of the nervous circuits in the brain responsible for it are the same as those that are used during the feeling of romantic love – although love and hate appear to be polar opposites.

A study using a brain scanner to investigate the neural circuits that become active when people look at a photograph of someone they say they hate has found that the "hate circuit" shares something in common with the love circuit.

The findings could explain why both hate and romantic love can result in similar acts of extreme behaviour – both heroic and evil – said Professor Semir Zeki of University College London, who led the study published in the on-line journal PloS ONE.

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Buzz Aldrin: Mars Pioneers Should Stay There

Buzz Aldrin

From Cosmos:

PARIS: The first astronauts sent to Mars should be prepared to spend the rest of their lives there, in the same way that European pioneers headed to America knowing they wouldn't return home, says moonwalker Buzz Aldrin.

In an interview with reporters, the second man to set foot on the Moon said the Red Planet offered far greater potential than Earth's satellite as a place for habitation.

No coming back

With what appears to be vast reserves of frozen water, Mars "is nearer terrestrial conditions, much better than the Moon and any other place," Aldrin, 78, said in a visit to Paris last week. "It is easier to subsist, to provide the support needed for people there than on the Moon."

It took Aldrin, Neil Armstrong and Michael Collins eight days to go to the Moon – 380,000 km from Earth – and return in July 1969, aboard Apollo 11.

Going to Mars, though, is a different prospect. The distance between the Red Planet and Earth varies between 55 million km and more than 400 million km. Even at the most favourable planetary conjunction, this means a round trip to Mars would take around a year and a half.

"That's why you [should] send people there permanently," said Aldrin. "If we are not willing to do that, then I don't think we should just go once and have the expense of doing that and then stop."

Read more ....

Friday, October 31, 2008

The Real (And Frightening) Ghosts Of The World

From Live Science:

Tonight the neighborhood will be filled with small ghosts roaming around looking for sweets, and the bars will be filled with adult ghosts looking for something else.

The ghost costume for Halloween is a traditional favorite because it costs nothing (grab a sheet out of the laundry) and there's little prep work (throw it over your head, but be sure and cut out two eye holes).

The ghost is also a Halloween favorite because it symbolizes a spirit coming back from the dead, and that's what Halloween is supposed to be about — creatures returning from the beyond to scare the daylights out of everyone.

But in today's Halloween party culture, no one is really scared of someone with a sheet over their head and everybody knows the whole ghost thing is done in jest.

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Daylight Saving Time: Why Did We Do It?

From Live Science:

At 2:00 a.m. local on Sunday, most of the United States except Hawaii and Arizona will leave daylight saving time behind and fall back an hour to standard time.

The annoyance of resetting clocks (or forgetting to, and showing up an hour early for appointments on Sunday) may raise the question of why we bother with this rigmarole in the first place.

Daylight saving time is most often associated with the oh-so-sweet extra hour of sleep in fall and the not-so-nice loss of an hour in spring, but some of the original reasons for resetting our clocks twice a year including saving energy and having more daylight hours for retailers, sporting events and other activities that benefit from a longer day.

As far back as the 1700s, people recognized the potential to save energy by jumping clocks ahead one hour in the summer — Benjamin Franklin even wrote about it — although the idea was not put into practice until the 20th century.

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Hubble Up And Running, With A Picture To Prove It

This image from the Hubble telescope demonstrates that its wide field planetary camera 2 is working properly. NASA/ESA/M. Livio, STScI

From The New York Times:

After an electrical malfunction caused it to go dormant a month ago, the Hubble Space Telescope is back in business. But the space shuttle mission to repair and upgrade the Hubble has been pushed back again, NASA officials said Thursday.

To show this week that the orbiting eye still has the same chops as ever, astronomers from the Space Telescope Science Institute in Baltimore used Hubble’s wide-field planetary camera 2 to record this image of a pair of smoke-rings galaxies known as Arp 147.

The galaxies, about 450 million light-years away in the constellation Cetus, apparently collided in the recent cosmic past. According to Mario Livio, of the space telescope institute, one of the galaxies passed through the other, causing a circular wave, like a pebble tossed into a pond, that has now coalesced into a ring of new blue stars. The center of the impacted galaxy can be seen as a reddish blur along the bottom of a blue ring.

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Phoenix Enters Safe Mode

(Image from NASA)

From Mars Daily:

NASA'S Phoenix Mars Lander entered safe mode late yesterday in response to a low-power fault brought on by deteriorating weather conditions. While engineers anticipated that a fault could occur due to the diminishing power supply, the lander also unexpectedly switched to the "B" side of its redundant electronics and shut down one of its two batteries.

During safe mode, the lander stops non-critical activities and awaits further instructions from the mission team. Within hours of receiving information of the safing event, mission engineers at NASA's Jet Propulsion Laboratory, Pasadena, Calif., and at Lockheed Martin in Denver, were able to send commands to restart battery charging. It is not likely that any energy was lost.

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New NASA Capsule Orion Resembles Apollo

Engineers and technician run a structural mass properties test on a test module of the Orion crew exploration vehicle at NASA's Dryden Flight Research Center on Edwards Air Force Base. Irfan Khan / Los Angeles Times

New NASA Capsule Orion Resembles Apollo
-- L.A. Times

The agency unveils the test module for structural testing at Edwards Air Force Base. The capsule, designed to carry humans to the moon, looks a lot like the one that first did so four decades ago.

Reporting from Edwards Air Force Base -- NASA rolled out its next-generation space capsule here Wednesday, revealing a bulbous module that is scheduled to carry humans back to the moon in 2020 and eventually onward to Mars.

Unlike the space-plane shape of the shuttles, the new Orion Crew Exploration Vehicle looks strikingly similar to the old Apollo space capsule that carried Neil Armstrong, Buzz Aldrin and Michael Collins to the moon and back in 1969, with Armstrong and Aldrin becoming the first humans to walk on the lunar surface.

There is one key difference, however. The test module, unveiled at NASA's Dryden Flight Research Center, is substantially bigger -- 16.5 feet in diameter compared with Apollo 11's 12.8 feet.

The craft's extra girth will allow it to carry six astronauts instead of Apollo's three.

"This is the same shape as Apollo," said Gary Martin, the project manager for the test program at Dryden. "But the extra space translates into twice as much volume as Apollo."

Still, cramming six astronauts inside will make it "pretty cozy," he said.

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Ten Immune System-Boosting Foods

Some foods can help protect against viruses and bacteria when you are sick.
(AP Photos/Getty Images)

From ABC News:

Many people, when they are feeling miserable from a cold or the flu, get the urge to gorge on food. But picking the right foods can benefit and even speed healing.

"This is more or less a new area," said Kerry Neville, a Seattle dietitian and spokeswoman for the American Dietetic Association. "There has been some good research, and we'll be seeing more. But it remains to be seen how much of this can actually be helpful."

Teasing out how and where food can benefit is difficult because our immune systems -- a coordinated system of signals sent and received, feedback loops and multiple redundancies to ensure that foreign molecules are identified and destroyed if they are harmful -- are so complex. A breakdown in any part of the system leaves the whole body susceptible to infection and illness.

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Brain's 'Hate Circuit' Identified

New research has found that people who view pictures of someone they hate display activity in distinct areas of the brain that, together, may be thought of as a 'hate circuit.' (Credit: iStockphoto/Valentin Casarsa)

ScienceDaily (Oct. 29, 2008) — People who view pictures of someone they hate display activity in distinct areas of the brain that, together, may be thought of as a 'hate circuit', according to new research by scientists at UCL (University College London).

The study, by Professor Semir Zeki and John Romaya of the Wellcome Laboratory of Neurobiology at UCL, examined the brain areas that correlate with the sentiment of hate and shows that the 'hate circuit' is distinct from those related to emotions such as fear, threat and danger – although it shares a part of the brain associated with aggression. The circuit is also quite distinct from that associated with romantic love, though it shares at least two common structures with it.

Read more ....

Hubble Re-Opens An Eye

The Hubble telescope has helped scientists view various new galaxies and stars from space.
(AP Photo )

From ABC News:

The Hubble Space Telescope has reawakened and is taking its first pictures of the sky after a series of glitches left it idle for a full month.

Engineers successfully booted up the probe's main camera, the Wide-Field Planetary Camera 2, on Saturday. The instrument, which is set to be swapped out in 2009 during the telescope's last servicing mission, is now taking its last scheduled images of the sky.

"It is a relief that everything is working well," says Rodger Doxsey, head of the Hubble mission office at the Space Telescope Science Institute in Baltimore, Maryland. "We did a few calibration observations, which worked fine, and then restarted science observing with it over the weekend."

Hubble has been mostly dormant since late September, when a device needed to collect and process data from the telescope's science instruments failed.

Read more ....

Thursday, October 30, 2008

New Minerals Point To Wetter Mars


From The BBC:

A Nasa space probe has discovered a new category of minerals spread across large regions of Mars.

The find suggests liquid water remained on Mars' surface a billion years later than scientists had previously thought.

The US Mars Reconnaissance Orbiter (MRO) spacecraft found evidence of hydrated silica, better known as opal.

The discovery adds to the growing body of evidence that water played a crucial role in shaping the Martian landscape and - possibly - in sustaining life.

Hydrated, or water-containing, minerals are telltale signs of when and where water was present on ancient Mars.

Researchers made the discovery using the Compact Reconnaissance Imaging Spectrometer (CRISM) instrument on MRO.

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Pictured: The Cave Of Crystals Discovered 1,000ft Below A Mexican Desert

(Click To Enlarge)
Crystal forest: People clambering through the Cave of Crystals in Mexico wearing suits and backpacks of ice-cool air to cope with the 112F temperature (Image from The Daily Mail)

From The Daily Mail:

Until you notice the orange-suited men clambering around, it's hard to grasp the extraordinary scale of this underground crystal forest.

Nearly 1,000ft below the Chihuahua Desert in Mexico, this cave was discovered by two brothers drilling in the Naica lead and silver mine. It is an eerie sight.

Up to 170 giant, luminous obelisks - the biggest is 37.4ft long and the equivalent height of six men - jut across the grotto like tangled pillars of light; and the damp rock of their walls is covered with yet more flawless clusters of blade-sharp crystal.

Read more ...

Doorknobs And TV Remotes Are Germ Hotbeds

Germs, germs everywhere. Now that cold and flu season has arrived, germs are lurking in more places than you might think. Read on to find out where pesky bugs love to hang out. Rob Cross/The Ottawa Citizen

From Yahoo News/AP:

WASHINGTON – Someone in your house have the sniffles? Watch out for the refrigerator door handle. The TV remote, too. A new study finds that cold sufferers often leave their germs there, where they can live for two days or longer. Scientists at the University of Virginia, long known for its virology research, tested surfaces in the homes of people with colds and reported the results Tuesday at the nation's premier conference on infectious diseases.

Doctors don't know how often people catch colds from touching germy surfaces as opposed to, say, shaking a sick person's hand, said Dr. Birgit Winther, an ear, nose and throat specialist who helped conduct the study.

Two years ago, she and other doctors showed that germs survived in hotel rooms a day after guests left, waiting to be picked up by the next person checking in.

For the new study, researchers started with 30 adults showing early symptoms of colds. Sixteen tested positive for rhinovirus, which causes about half of all colds. They were asked to name 10 places in their homes they had touched in the preceding 18 hours, and researchers used DNA tests to hunt for rhinovirus.

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