Saturday, September 25, 2010

Mars Orbiter Back Up And Running Again Following Computer Glitch

This artist's concept of the Mars Reconnaissance Orbiter from 2006 features the spacecraft's main bus facing down, toward the red planet. The large silver circular feature above the spacecraft bus is the high-gain antenna, the spacecraft's main means of communicating with both Earth and other spacecraft. NASA/JPL

From Christian Science Monitor:

Mars orbiter spontaneously rebooted itself and stopped gathering information last week. However, last Saturday, the Mars orbiter began collecting data again and appears to be back on track, high above the Red Planet.

A powerful NASA spacecraft around Mars has bounced back yet again Saturday, resuming its study of the Red Planet three days after a recurring computer glitch temporarily waylaid its mission.

The Mars Reconnaissance Orbiter started gathering science data again on Sept. 18, NASA officials announced. On Sept. 15, the orbiter put itself into precautionary "safe mode" — a sort of spacecraft hibernation — after spontaneously rebooting for unknown reasons.

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Mankind's First Genocide?

An archaeologist uncovers a skeleton from the Uruk colony's remains. Was this person killed by his/her own people? Photo courtesy Professor Clemens Reichel

New Discoveries Hint At 5,500 Year Old Fratricide At Hamoukar, Syria -- The Independent

Five years ago, archaeologists found the “earliest evidence for large scale organized warfare in the Mesopotamian world.” Using slings and clay bullets a – likely Uruk – army took over the city of Hamoukar, burning it down in the process. Now, new discoveries at a nearby settlement shed more light on the 3500 BC battle – and raise more questions. If the invading army was from Uruk, did they kill their own people? If so, why?

Hamoukar is a city that flourished in northern Syria since at least 4000 BC. They traded in obsidian and in later times copper working became increasingly important to the city’s economy. Thousands of clay sealings – once used to lock doors or containers and impressed with stamp seals – were found at the ancient site. They tell of a bureaucratic system that was almost as complex as our own.

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NASA Budget Likely to Remain In Limbo Until After Election Day, Lawmakers Say

To the Launch Pad Space Shuttle Discovery crawled toward Launch Pad A this week, preparing for its final flight in November. via Flickr/ forthebirds (CC licensed)

From Popular Science:

Apparently, space doesn’t sell in an election year. Lawmakers are saying Congress is unlikely to make any spending decisions about NASA until after November 2, according to several reports.

Congress has been debating the space agency’s future in fits and starts since the beginning of the year, when President Obama first proposed shifting its priorities. Lawmakers balked at his plans and offered their own budget suggestions, which have been bandied about through the summer. Still, competing House and Senate bills remain in play, and they’re unlikely to get resolved in the next two weeks, when Congress goes on fall break to concentrate on the midterm elections.

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Scientists Develop New 'Photonic' Chip That Could Make Quantum Computers A Reality

Image: Quantum computers will be able to conduct far more complex calculations than current computers

From The Daily Mail:

Scientists have developed a computer chip that could pave the way for a new generation of powerful 'quantum' computers.

The photonic chip, built by scientists from Bristol’s Centre for Quantum Photonics, uses light rather than electricity to pass information.

The breakthrough could lead to 'quantum' computers capable of performing complex calculations and simulations that are impossible for today's computers.

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Aurora Saturnalis: Halos At The Poles Of The Ringed Planet


From New Scientist:

Saturn was already the solar system's undisputed lord of the rings. Now newly processed images from the Cassini spacecraft are revealing previously unseen halos of infrared auroral light above the planet's poles.

Auroras on Saturn form like those on Earth, when charged particles in the solar wind stream down the planet's magnetic field towards its poles, where they excite gas in the upper atmosphere to glow. Some auroras on the ringed planet are also triggered when some of its moons, which are electrically conducting, move through the charged gas surrounding Saturn.

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Malaria Passed From Gorillas To Humans

The parasite passes from one human to another via a female Anopheles mosquito which hands it on when the insect takes a blood meal. Hemera

From Discovery News:


The parasite that causes the most lethal strain of malaria among humans crossed the species barrier from gorillas, scientists reported on Wednesday.

Plasmodium falciparum is the deadliest of the five known strains of malaria parasites, causing several hundred million cases each year, of which around a million are fatal.

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LHC Finds 'Interesting Effects'

From The BBC:

Scientists at the Large Hadron Collider say they are getting some fascinating early results as they get set to probe new areas of physics.

The giant machine on the Franco-Swiss border is studying the fundamental nature of matter by smashing together proton particles at near light-speed.

Its CMS detector is reported to have seen "new and interesting effects".

These effects concern the particular paths taken by the debris particles as they move away from the impacts.

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Friday, September 24, 2010

Groundwater Depletion Rate Accelerating Worldwide

Global map of groundwater depletion, measured in cubic meters of water per year. (Credit: Image courtesy of American Geophysical Union)

From Science Daily:

ScienceDaily (Sep. 23, 2010) — In recent decades, the rate at which humans worldwide are pumping dry the vast underground stores of water that billions depend on has more than doubled, say scientists who have conducted an unusual, global assessment of groundwater use.

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Hard-Hitting Sports Hold Dangers For Teen Athletes

More teen football players are going to the emergency room for concussions. Credit: M. Pappas.

From Live Science:

West Orange, Texas, high school football player Reggie Garrett had just thrown his second touchdown pass of the game Friday night when he jogged to the sidelines, gave a coach a low-five and collapsed.

Just over an hour later, doctors at Memorial Hermann Baptist Orange Hospital declared the 17-year-old senior dead.

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How To Do (Almost) Everything With A Kindle 3

Photo of third-generation Kindle. Courtesy Amazon.com

From Gadget Lab:

Amazon’s Kindle can do a lot more than just buy and read Amazon-sold e-books. This is often a surprise. I usually wind up in conversations where someone says “I’d like to try a Kindle, but it can’t _______.” Usually, it can.

I was actually surprised when I bought my Kindle not just by how much it could do, but by how well it did it. The Kindle suffers from two things: 1) it’s never going to do everything that a full-fledged computer or even a color touchscreen tablet can do; and 2) the Kindle 3 has improved on a whole slew of features that were either poorly implemented in or entirely absent from earlier iterations of the Kindle.

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Neandertals Blasted Out Of Existence, Archaeologists Propose

TRINKETS OF SURVIVAL Human-made items, such as these pendants fashioned from animals' teeth, appeared in a Russian cave shortly after volcanic eruptions around 40,000 years ago wiped out Neandertal populations in the area, researchers say.Golovanova et al.

From Science News:

Modern humans may have thrived thanks to geographic luck, not wits.

Neandertals didn’t get dumped on prehistory’s ash heap — it got dumped on them. At least three volcanic eruptions about 40,000 years ago devastated Neandertals’ western Asian and European homelands, spurring a rapid demise of these humanlike hominids, says a team led by archaeologist Liubov Golovanova of the ANO Laboratory of Prehistory in St. Petersburg, Russia.

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Air Force's Space-Based Surveillance Satellite Launches Tomorrow, To Scan For Space Junk

Space Debris NASA

From Popular Science:

A massive collection of spacecraft parts, dead satellites, and spent rocket stages circle high above the Earth in a sort of “floating landfill.” According to recent estimates, about 4 million pounds of space junk currently orbit the Earth, including some 20,000 pieces of debris larger than 10 centimeters.

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BlackBerry Maker 'To Unveil 'BlackPad' Tablet To Take On iPad Next Week'

The Blackpad has not been officially released yet but some technology bloggers say these pictures are what it is likely to look like

From The Daily Mail:

BlackBerry maker Research in Motion (RIM) is set to unveil its version of a tablet computer to take on the iPad next week, it was claimed today.

The BlackPad, as it has been nicknamed, will be launched before the end of the year and will have a seven-inch touch screen and at least one built-in camera, a source told the Wall Street Journal.

And it is claimed that RIM will unveil the device at a developers' conference in San Francisco next week.

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Robots On TV: Rescue Bot Knows, Um, What You Mean



From New Scientist:

A robot that can understand plain English and manage a complicated to-do list could soon be the hero of search and rescue missions.

Most robots that can recognise speech only respond to pre-determined instructions. For example, some powered wheelchairs respond to spoken directions, but only when certain words are spoken clearly. In the real world, that's not how humans communicate. Our speech is peppered with "disfluencies" – the "umms", "ahs" and stutters of everyday language. If we want to successfully speak to robots in real-life situations – such as search and rescue missions, where noise and stress might get in the way of clarity – robots need to understand these complications.

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Mars Methane Mystery: What's Making The Gas?

This image shows concentrations of Methane discovered on Mars. Click to enlarge this image. NASA

From Discovery News:

Methane in Mars' atmosphere lasts less than a year meaning something -- either geologic or biological -- keeps belching it out.

A six-year study of methane in Mars' atmosphere shows the planet is far from dead, though whether it is merely geologically active or host to microbial life is unknown.

An Italy-based team of researchers combed through billions of measurements taken by NASA's Mars Global Surveyor to compile seasonal maps of the gas, a simple chemical compound that appears in minute quantities in Mars' carbon dioxide-rich atmosphere.

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Artificial Human Brain Being Built In A Lab

Credit: Wikimedia

From Cosmos:

BIRMINGHAM: Researchers have developed an artificial bit of human brain to help them study Alzheimer's and other diseases, a huge improvement over animal models.

Mike Coleman and his team from Aston University, Birmingham, have developed artificial brain tissue that responds to some chemicals like human brains do. Their findings were presented at the British Festival of Science in Birmingham.

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Neandertals Were Able To 'Develop Their Own Tools'

From The BBC:

Neanderthals were keen on innovation and technology and developed tools all on their own, scientists say.

A new study challenges the view that our close relatives could advance only through contact with Homo sapiens.

The team says climate change was partly responsible for forcing Neanderthals to innovate in order to survive.

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Watch And Learn How Music Videos Are Triggering A Literacy Boom

A group of people watched television at a slum in Gulbai Tekra, an area in the city of Ahmedabad in India. (Jaydeep Bhatt)

From Boston.com:

Tiny, sun-soaked Khodi on the western coast of India’s Gujarat state is the kind of village where cattle still plough the fields and women fill clay pots with water from the village well. In the past few years, however, the town has been changing: Thatched mud huts are slowly giving way to sturdy, single-story concrete blocks; farmers conduct their business on cellphones. The state buses, which until a decade ago were only filled with men, are now crammed with women. Enrollment in the local school has soared.

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Ocean Cooling Contributed to Mid-20th Century Global Warming Hiatus

Iceberg in the icefjord near the city of Ilulissat in Greenland. While the temperature drop was evident in data from all Northern Hemisphere oceans, it was most pronounced in the northern North Atlantic, a region of the world ocean thought to be climatically dynamic. (Credit: iStockphoto/Anders Peter Amsnæs)

From Science Daily:

ScienceDaily (Sep. 23, 2010) — The hiatus of global warming in the Northern Hemisphere during the mid-20th century may have been due to an abrupt cooling event centered over the North Atlantic around 1970, rather than the cooling effects of tropospheric pollution, according to a new paper appearing Sept. 22 in Nature.

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Itsy Bitsy Spider's Web 10 Times Stronger Than Kevlar

The web of the Darwin's bark spider (Caerostris darwini), can span some square feet (2.8 square meters) and is attached to each riverbank by anchor threads as long as 82 feet (25 meters). Credit: Matjaz Kuntner.

From Live Science:

Scientists have found the toughest material made by life yet — the silk of a spider whose giant webs span rivers, streams and even lakes.

Spider silks were already the toughest known biomaterials, able to absorb massive amounts of energy before breaking. However, researchers have now revealed the Darwin's bark spider (Caerostris darwini) has the toughest silk ever seen — more than twice as tough as any previously described silk, and more than 10 times stronger than Kevlar.

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