FYI: Why Does My Voice Sound Different When I Hear it On A Recording?

Tone Deaf: Your voice makes
 vibrations that only you can hear iStock

From Popsci.com:

It sounds different because it is different. "When you speak, the vocal folds in your throat vibrate, which causes your skin, skull and oral cavities to also vibrate, and we perceive this as sound," explains Ben Hornsby, a professor of audiology at Vanderbilt University. The vibrations mix with the sound waves traveling from your mouth to your eardrum, giving your voice a quality — generally a deeper, more dignified sound — that no one else hears.

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How Michael Jackson's Death Shut Down Twitter, Brought Chaos To Google... And 'Killed Off' Jeff Goldblum

TMZ.com was the first to break the story that Michael Jackson had had a cardiac arrest.

From The Daily Mail:

The internet came alive like never before as people around the world logged on to follow the stunning news of Michael Jackson's death.

The story created such a surge in online traffic last night that Google returned an 'error message' for searches of the singer's name as it assumed it was under attack.

And just seconds after the story broke on the American entertainment website TMZ.com, messages or 'Tweets' about the singer on the micro-blogging site Twitter doubled, leading to a temporary shutdown of the site.

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Magnetic 'Superatoms' Promise Tuneable Materials

Designer clusters of atoms that can mimic other elements have for the first time been devised with magnetic properties (Image: Ulises Reveles, VCU)

From The New Scientist:

New "superatoms" – clusters of atoms that share electrons and can mimic the behaviour of other elements – have been devised with magnetic properties for the first time. The breakthrough provides a way to design novel nano-scale building blocks with controllable magnetic properties that could be used to make faster computer processors and denser memory storage.

Superatoms were discovered in the 1980s when Walter Knight and colleagues at the University of California, Berkeley, found that groups of sodium atoms can share electrons amongst themselves.

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The Milk Myth: What a Body Really Needs

Photo: Milk is dandy, but yogurt has more calcium and is easier to digest. Collards and other greens also have about as much or more calcium than milk by the cup. Greens, unlike milk, have the added benefit of vitamin K, also necessary for strong bones. Tofu and sesame are also very high in calcium. Image credit: stockxpert

From Live Science:

Young adults are not drinking enough milk, according to a study published in the July/August issue of the Journal of Nutrition Education and Behavior by researchers from the University of Minnesota, Minneapolis.

Well, at least that's according to the press release about the study, along with a few press reports on the matter. But according to lead author Nicole Larson, the focus on the study was on calcium.

Once again, we see the words "milk" and "calcium" used interchangeably in the popular press. Milk is a calcium source, but by no standard other than that of the National Dairy Council is it the best calcium source.

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Space Shuttle Science Shows How 1908 Tunguska Explosion Was Caused By A Comet

In 1927 Professor Leonid Kulik took the first photographs of the massive destruction of the taiga forest after the Tunguska catastrophe. (Credit: Professor Leonid Kulik)

From Science Daily:

ScienceDaily (June 25, 2009) — The mysterious 1908 Tunguska explosion that leveled 830 square miles of Siberian forest was almost certainly caused by a comet entering the Earth's atmosphere, says new Cornell University research. The conclusion is supported by an unlikely source: the exhaust plume from the NASA space shuttle launched a century later.

The research, accepted for publication (June 24, 2009) by the journal Geophysical Research Letters, published by the American Geophysical Union, connects the two events by what followed each about a day later: brilliant, night-visible clouds, or noctilucent clouds, that are made up of ice particles and only form at very high altitudes and in extremely cold temperatures.

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Evolutionary Origins Of Your Right And Left Brain

Photoillustration by TWIST CREATIVE; MedicalRF.com Corbis (brain); Medioimages Getty Images (calculator); Joerg Steffens Corbis (faces); Westend61 Corbis (woman smiling); Dougal Waters Getty Images (ballerina); Mike Kemp Getty Images (rattlesnake); C Squared Studios Getty Images (palette); Vladimir Godnik Getty Images (paintbrushes); Carrie Boretz Corbis (girls whispering); Robert Llewellyn Corbis (calipers)

From Scientific American:

The division of labor by the two cerebral hemispheres—once thought to be uniquely human—predates us by half a billion years. Speech, right-handedness, facial recognition and the processing of spatial relations can be traced to brain asymmetries in early vertebrates.

The left hemisphere of the human brain controls language, arguably our greatest mental attribute. It also controls the remarkable dexterity of the human right hand. The right hemisphere is dominant in the control of, among other things, our sense of how objects interrelate in space. Forty years ago the broad scientific consensus held that, in addition to language, right-handedness and the specialization of just one side of the brain for processing spatial relations occur in humans alone. Other animals, it was thought, have no hemispheric specializations of any kind.

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Cloud Computing: Just Another Online Fad--or the Biggest Revolution Since the Internet?

Credit: James Gulliver Hancock

From Technology Review:

According to its advocates, cloud computing is poised to succeed where so many other attempts to deliver on-demand computing to anyone with a network connection have failed. Some skepticism is warranted. The history of the computer industry is littered with the remains of previous aspirants to this holy grail, from the time-sharing utilities envisioned in the 1960s and 1970s to the network computers of the 1990s (simple computers acting as graphical clients for software running on central servers) to the commercial grid systems of more recent years (aimed at turning clusters of servers into high-­performance computers). But cloud computing draws strength from forces that could propel it beyond the ranks of the also-rans.

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Stuck on Mars, Spirit Rover Does Science

From Yahoo News/Space:

The Mars rover Spirit is keeping scientists' spirits up by doing some science while it is stuck in soft soil on the red planet.

The rover has been immobile, trapped hub-deep since May 6. Engineers have replicated the landscape in lab back home and, using an identical rover model, tried to figure out what to do, so far to no avail.

A rock seen beneath Spirit in images from the camera on the end of the rover's arm may be touching Spirit's belly, NASA said in a statement today. It appears to be a loose rock not bearing the rover's weight.

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Buzz Aldrin To NASA: U.S. Space Policy Is On The Wrong Track

Platon photographed Buzz Aldrin for PM in Los Angeles, May 2009. “It’s mankind’s destiny to walk on another planet,” Aldrin says. “We can achieve it, but we’ve got to have the right plan.” (Photograph by Platon)

From Popular Mechanics:

Apollo 11 astronaut Buzz Aldrin has a problem with NASA’s current manned space plan: Namely, the five-year gap between the shuttle’s scheduled retirement next year and the debut of the Ares I rocket and the Orion spacecraft, which will take us no further than the moon—a place we’ve already been. Aldrin thinks NASA can do better. His plan is to scrap Ares I, stretch out the remaining six shuttle flights and fast-track the Orion to fly on a Delta IV or Atlas V. Then, set our sites on colonizing Mars. Here, Buzz challenges NASA to take on his bolder mission.

I had a splendid career at NASA as an astronaut in the Gemini and Apollo programs. The capstone, of course, was my moonwalk on the Sea of Tranquility 40 years ago. I have only two regrets from my NASA days, and both were my own fault: I failed to speak out when I saw bad decisions being made. The first came in 1966, when NASA, in a fit of excessive caution, canceled the Astronaut Maneuvering Unit (AMU), the Buck Rogers–style jet backpack I was scheduled to try out on Gemini 12. Despite difficulties with the AMU on Gemini 9, I was very confident I could make it work. But like a good astronaut, I kept my mouth shut, and I’ve regretted it ever since. As it turned out, it took 18 years for NASA to develop another jet pack, the Manned Maneuvering Unit, used on three space shuttle missions in 1984.

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Oldest Musical Instrument Found

Flute: The earliest modern humans in Europe carved this 8.5-inch flute from a vulture bone more than 35,000 years ago.

From Popsci.com:

Bird-bone flute hints that Paleolithic humans banded together to the demise of Neanderthals

How’s this for classic rock? German scientists have unearthed the oldest-known musical instrument fashioned by human hands. It’s a delicate flute made from the wing bone of a vulture that dates to at least 35,000 years old—just after the first modern humans entered Europe. The team discovered the flute littered among a trove of early-human loot at a mountain cave in southwest Germany. It included a few other flute fragments and a female figurine carved from the ivory tusks of a mammoth with body proportions that are beyond Rubenesque.

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Ice On Fire: The Next Fossil Fuel

From The New Scientist:

DEEP in the Arctic Circle, in the Messoyakha gas field of western Siberia, lies a mystery. Back in 1970, Russian engineers began pumping natural gas from beneath the permafrost and piping it east across the tundra to the Norilsk metal smelter, the biggest industrial enterprise in the Arctic.

By the late 70s, they were on the brink of winding down the operation. According to their surveys, they had sapped nearly all the methane from the deposit. But despite their estimates, the gas just kept on coming. The field continues to power Norilsk today.

Where is this methane coming from? The Soviet geologists initially thought it was leaking from another deposit hidden beneath the first. But their experiments revealed the opposite - the mystery methane is seeping into the well from the icy permafrost above.

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Longer Life Linked To Specific Foods In Mediterranean Diet

Eating more vegetables, fruits, nuts, pulses and olive oil, and drinking moderate amounts of alcohol, while not consuming a lot of meat or excessive amounts of alcohol is linked to people living longer. (Credit: iStockphoto)

From Science Daily:

ScienceDaily (June 24, 2009) — Some food groups in the Mediterranean diet are more important than others in promoting health and longer life according to new research published on the British Medical Journal website.

Eating more vegetables, fruits, nuts, pulses and olive oil, and drinking moderate amounts of alcohol, while not consuming a lot of meat or excessive amounts of alcohol is linked to people living longer.

However, the study also claims, that following a Mediterranean diet high in fish, seafood and cereals and low in dairy products were not indicators of longevity.

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Ancient Mummy's Face Recreated

Chicago artist Joshua Harker used traditional forensic methods to build layers of fat, muscle and flesh upon the skull images of a mummy made with CT scans at the University of Chicago. Credit: Joshua Harker for the University of Chicago

From Live Science:

The face of a long-dead mummy has been brought back to life through forensic science.

Based on CT-scans of the skull of the ancient Egyptian mummy Meresamun, two artists independently reconstructed her appearance and arrived at similar images of the woman.

Meresamun, a temple singer in Thebes (ancient Luxor) at about 800 B.C., died of unknown causes at about age 30. Until recently, modern viewers of the University of Chicago-owned mummy have had to guess about the woman behind the mask.

Now scientists think they have a pretty good idea of what she looked like.

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Life On Saturn? Caverns Of Salt Water May Lie Beneath Frozen Surface Of Planet's Moon

Evidence: This picture shows water vapour jets
erupting from Saturn's icy moon, Enceladus

From The Daily Mail:

Alien life could have evolved on one of Saturn's moons, scientists say.

They have found evidence that seas may lie beneath the frozen surface of Enceladus - the planet's sixth biggest moon.

It follows the discovery of a giant plume of salt water and ice spurting hundreds of miles into space from the moon's surface.

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Evolution Faster When It's Warmer

The results could help explain why the warm tropics are so species-rich

From The BBC:

Climate could have a direct effect on the speed of "molecular evolution" in mammals, according to a study.

Researchers have found that, among pairs of mammals of the same species, the DNA of those living in warmer climates changes at a faster rate.

These mutations - where one letter of the DNA code is substituted for another - are a first step in evolution.

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Can Wind Power Get Up to Speed?

The Burbo Bank Offshore Wind Farm in Liverpool Bay, England
Christopher Furlong / Getty

From Time Magazine:

Pop quiz: what source of power doesn't come out of the ground, doesn't burn and isn't radioactive? Hint: it contributed the most new electricity generation to the U.S. grid in 2008.

The answer is wind power, the technology that has become synonymous with going green. Companies that started out small, like Denmark's Vestas and India's Suzlon Energy, have become multinational giants selling steel and fiberglass wind turbines; even blue chippers like General Electric have identified wind power as a major revenue source for the future, while the construction and installation of wind turbines will employ workers here in the U.S. Investing in wind power, said President Barack Obama at a turbine factory in Iowa on Earth Day, "is a win-win. It's good for the environment; it's great for the economy."

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The First Europeans Were Cannibals: Archaeologists

Photo: Skull named Miguelon, estimated to be 400,000 years old and the most complete skull of an Homo heidelbergensis ever found, is seen at the Atapuerca archaeological site, in the Atapuerca mountains in northern Spain. In 2007 a historic discovery of the fossilised remains of the 'first european' human was made at the site. (AFP/File/Philippe Desmazes)

From Yahoo News/AP:

ATAPUERCA, Spain (AFP) – The remains of the "first Europeans" discovered at an archaeological site in northern Spain have revealed that these prehistoric men were cannibals who particularly liked the flesh of children.

"We know that they practiced cannibalism," said Jose Maria Bermudez de Castro, one of the co-directors of the Atapuerca project, a UNESCO World Heritage Site.

A study of the remains revealed that they turned to cannibalism to feed themselves and not as part of a ritual, that they ate their rivals after killing them, mostly children and adolescents.

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Giant Prehistoric Kangaroos Wiped Out By Hungry Ice Age Hunters

Artist's illustration of the extinct Procoptodon goliah which roamed around Australia 45,000 years ago. (Artist Peter Trusler/Australian Postal Corporation)

From Times Online:

It stood tall at 6’5, weighed over 500lbs, had the face of a koala and the body of a sturdy kangaroo. And apparently it was delicious.

Scientists think they have discovered the reason behind the demise of the prehistoric Australian marsupial Procoptodon goliah – better known as the giant, short-snouted kangaroo. They say it was not climate change, as has always been assumed, but hungry Ice Age hunters.

The animal – about three times bigger than a modern-day kangaroo and with slightly different features - was one of many Ice-Age megafauna whose demise has long been debated among experts, but usually put down to the changing environment.

However an international team of scientists, led by Gavin Prideaux from Flinders University in South Australia, has discovered a different theory behind the reason the animal became extinct 45,000 years ago.

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My Comment: I am hungry.

The New Nuclear Revolution -- A Commentary

From The Wall Street Journal:

Safe fission power is our future -- if regulators allow it.

After the Internet, the next big thing will be cheap and clean energy. Coal, oil and gas pollute and are increasingly expensive: We need alternatives. Because nuclear energy (stored among particles inside atoms) is millions of times more dense than chemical energy (stored among atoms in molecules), nuclear reactors belong high on our long list of energy alternatives.

Nuclear energy is released during fission and fusion. During fission, large elements like uranium are split into smaller elements. During fusion, small elements like hydrogen are combined into larger elements. These two processes have occurred naturally since the beginning of time -- 13.7 billion years. The Earth is warmed naturally by its own nuclear fission reactors within and also by the sun, that big nuclear fusion reactor.

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Not Space Junk Yet: Mars Rovers Carry On Despite Age, Ailments

From McClatchy News:

WASHINGTON — In one of the most remarkable engineering feats of our time, the aging Mars rovers Spirit and Opportunity are still taking orders and sending home pictures more than five years after they were supposed to turn into slabs of space junk.

Opportunity is still rolling along, but Spirit is hung up on a rock and may be reaching the end of its travels. The rovers' masters at NASA's Jet Propulsion Laboratory in Pasadena, Calif., hope they can nurse either or both of them through another harsh Martian winter.

"I'm very attached to them," said John Callas, the rover project manager. "They exhibit human-like qualities. They have trials and tribulations. Like aging humans, they've got arthritic joints, they forget things, their vision is not what it used to be. When something's not right, you get that sinking feeing in your stomach.''

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