Friday, November 27, 2009

Energetic Gamma Rays Spotted From 'Microquasar'

Material stolen from a young star (blue) forms a disc (red) around a black hole or neutron star in this illustration of the system Cygnus X-3. Strong flares occasionally erupt from this disc (Illustration: Walter Feimer/NASA Goddard Space Flight Center)

From New Scientist:

After decades of searching, astronomers have confirmed that a gluttonous stellar remnant that glows brightly in X-rays can create high-energy gamma rays as well. The tiny powerhouse could serve as a nearby laboratory to study how particles are accelerated in the universe's biggest black holes.

Cygnus X-3, a pair of objects that sit some 30,000 light years from Earth, has long been a puzzle. The system is thought to contain the dense remnant of a star – either a black hole or a neutron star – that is feeding on a disc of material stolen from a companion star.

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Military-Style Drones Set To Patrol Coastline To Spot Drug Smugglers And Illegal Immigrants

Unlike manned police helicopters, which can fly for a maximum of a few hours, the UAS have the capability to stay in the air for up to 15 hours

From The Daily Mail:

Unmanned military-style drones like those used by British troops in Afghanistan could soon be used to help combat illegal immigration and drug smugglers along Britain's coastlines.

The pilotless aircrafts, known as Unmanned Autonomous Systems (UAS), have been used by troops to pinpoint dangers and monitor enemy actions.

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UK Plutonium Cuts Strategy 'In Disarray' - Scientists

Photo: Sellafield nuclear plant has the world's largest store of separated plutonium

From The BBC:

The UK's plan to cut its stockpile of separated plutonium is in "disarray", a group of scientists has warned.

The British Pugwash Group (BPG) says the way 100 tonnes of the deadly powder is being stored is "ludicrous".

Its experts fear the stockpile at the Sellafield nuclear site in Cumbria - the largest in the world - could be a target for terrorists.

The government said the plutonium was stored safely and securely but recognised the need to make progress.

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Thursday, November 26, 2009

Ladybugs Taken Hostage by Wasps

Ladybug. Are ladybugs being overtaken by wasps? (Credit: iStockphoto/Klemens Wolf)

From Science Daily:

Science Daily (Nov. 26, 2009) — Are ladybugs being overtaken by wasps? A Université de Montréal entomologist is investigating a type of wasp (Dinocampus coccinellae) present in Quebec that forces ladybugs (Coccinella maculata) to carry their larvae. These wasps lay their eggs on the ladybug's body, a common practice in the insect world, yet they don't kill their host.

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Americans Toss Out 40 Percent of All Food


From Live Science:

While many Americans feast on turkey and all the fixings today, a new study finds food waste per person has shot up 50 percent since 1974. Some 1,400 calories worth of food is discarded per person each day, which adds up to 150 trillion calories a year.

The study finds that about 40 percent of all the food produced in the United States is tossed out.

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U.N. Finally Draws Link Between Population Bomb And Climate Change

Population is at the root of the problem because more people means more greenhouse gases.
Credit: iStockphoto


From Cosmos:

PARIS: Slowing population growth would help battle global warming, says an unprecedented U.N. report that links demographic pressure and climate change.

"Slower population growth... would help build social resilience to climate change's impacts and would contribute to a reduction of greenhouse-gas emissions in the future," the U.N. Population Fund (UNFPA) says.

Its 104-page document emphasises that population policies be driven by support for women, access to family planning, reproductive health and other voluntary measures.

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The Brain Humanity's Other Basic Instinct: Math

Image: iStockphoto

From Discover Magazine:

New research suggests that math has evolved its way right into our neurons—and monkeys', too.

Numbers make modern life possible. “In a world without numbers,” University of Rochester neuroscientist Jessica Cantlon and her colleagues recently observed in the journal Trends in Cognitive Sciences, “we would be unable to build a skyscraper, hold a national election, plan a wedding, or pay for a chicken at the market.”

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4 Wildly High-Tech Military and NASA Research Projects

Redstone Arsenal Base

From Popular Mechanics:

The Redstone Arsenal is an engineers' playground. The massive base hosts NASA and Army researchers involved in spacecraft and weapons-systems testing, from moonbound rockets to America's Army video-game development. During a recent tour, Popular Mechanics was shown—and stumbled across—research tests and demonstrations that highlight the scope of science and engineering that is performed every day within the Huntsville, Ala., secured location.

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My Comment: I have made it a point of knowing where every U.S. military research center is .... and a general idea on what they are doing. But Redstone Arsenal is one in which some serious s___ is happening. Therefore .... I am more than surprised that Popular Mechanics was permitted on the grounds.

NASA Scientists Say Martian Meteorite May Have Brought Life to Earth

Allen Hills Meteorite Thar be life? NASA

From Popular Science:

New analytical data supposedly backs the case for Martian life having once existed.

Martians may have already landed on Earth, at least in ancient microbial form. The same NASA team that discovered the controversial Allen Hills meteorite has shared new data that points to a biological origin for structures within the Martian rock, Spaceflight Now reports. NASA headquarters plans to officially address the new findings within days.

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Nuclear Fuel: Are We Heading For A Uranium Crunch?

Lack of incentive to invest in more uranium mines
(Image: Robert Francis/Robert Harding/Rex Features)


From New Scientist:

AS THE world prepares for the largest investment in nuclear power in decades, owners of uranium mines last week raised the prospect of fuel shortages. To make things worse, the reliability of estimates of the amount of uranium that can be economically mined has also been questioned.

Volatile oil and gas prices, along with the threat of global warming, have pushed governments to reconsider nuclear energy, partly because it is a low-carbon technology and partly because uranium supplies seem plentiful.

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The Amazing Images From The Space Shuttle's Seven-Day Stint At The International Space Station

(Click Photo to Enlarge)
Tools in hand, astronaut Randy Bresnik works on the exterior of the Columbus module of the International Space Station during the Atlantis crew's second spacewalk

From The Daily Mail:

Tomorrow the Space Shuttle Atlantis is due to touch down on Earth after a successful seven-day mission to deliver vital equipment to the International Space Station.

During the past week as astronauts stockpiled the outpost and performed maintenance a series of stunning images were taken which we reveal here.

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Spin-Based Electronics Gets Boost

Photo: The effect was shown in silicon, the standby of the semiconductor industry

From The BBC:

The next generation of computers may make use of the "spin" of electrons instead of their charge.

Spintronics relies on manipulating these spins to make them capable of carrying data.

The technique has been shown in a number of materials at low temperatures before.

But researchers writing in Nature have made use of these "spin-polarised" electrons in silicon at room temperature for the first time.

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Bioengineers Succeed in Producing Plastics Without the Use of Fossil Fuels

Computer rendering of E. coli bacteria. A newly developed E. coli strain is capable of efficiently producing unnatural polymers, through a one-step fermentation process. (Credit: iStockphoto/Sebastian Kaulitzki)

From Science Daily:

Science Daily (Nov. 26, 2009) — A team of pioneering South Korean scientists have succeeded in producing the polymers used for everyday plastics through bioengineering, rather than through the use of fossil fuel based chemicals. This groundbreaking research, which may now allow for the production of environmentally conscious plastics, is published in two papers in the journal Biotechnology and Bioengineering.

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Top 5 Surprising Turkey Facts

Eastern wild turkeys. Credit: Maslowski/National Wild Turkey Federation

From Live Science:

The average American eats 17.6 pounds of turkey per year, more than double the figure for 1970, according to the National Turkey Federation. To feed the growing appetite, some 273 million turkeys will be raised in the United States in 2009, and a good number of them will be consumed on Thanksgiving, after which many Americans will loll about, overstuffed, sleepy and in many cases intoxicated.

This is not what the Pilgrims had in mind.

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Astronauts Celebrate Thanksgiving in Space on Two Spaceships

(Click Image to Enlarge)
This image from the Space Station looks down over the Russian Soyuz spacecraft and the docked space shuttle Atlantis, with Earth's horizon forming the background. Photo from The Daily Mail

From Space.com:

A dozen astronauts in orbit will pause for a weightless Thanksgiving Thursday, despite the fact that they're flying on two different spaceships.

The space shuttle Atlantis, with seven crewmembers onboard, left the International Space Station early Wednesday, capping off a week-long visit to stock the outpost with spare equipment. The orbiter is slated to land Friday at Kennedy Space Center in Cape Canaveral, Fla.

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The Latest in Spy Tech


Watch CBS News Videos Online

From CBS News:

(CBS) In the final part of our "Somebody's Watching You" series, CBS News science and technology correspondent Daniel Sieberg shared the latest and greatest in hi-tech spy and anti-spy tools.

In fact, Sieberg even wore several surveillance gadgets on his person - a lapel camera pin, a watch camera and a tie remote-controlled camera.

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10 Geeky Things to Be Thankful For

Photo by Steve Voght; used under CC license.

From Geek Dad:

Next Thursday is, of course, Thanksgiving Day in the United States. While we celebrate the holiday with our families, along with turkey, stuffing and pumpkin pie (or whatever traditions you may have), many of us like to think of all the good things in our lives for which we’re thankful.

No matter how rough things are for you, you almost surely have some things in your life that make you feel lucky. Whether or not you believe in a deity or deities to whom to give thanks for the good things in your life, it can be good to take a little time out to consider how much you have that makes you happy.

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2009 Hurricane Season Quietest in Decades


From National Geographic:

As the 2009 Atlantic hurricane season comes to an end November 30, it will be remembered as one of the quietest in almost two decades, meteorologists say.

That's because persistent, upper-level winds linked to El Niño—unusually warm waters that sometimes form off the northwestern coast of South America—hampered tropical storm formation. Just 9 storms took shape, instead of an average of 15.

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Russian Space Program Facing Same Issues as NASA

From Daily Tech:

Russian space program must shift gears and begin to seriously think about the coming years
The U.S. space program reportedly isn't the only one that has issues related to research and development, leading to a possible shake up among space nations over the next two-to-three years.

Similar to the current problem plaguing NASA, the Russian space program also has an aging spacecraft, the Soyuz spacecraft, with no specific details of a new next-generation shuttle on the horizon. The Soyuz already is used to transport astronauts and supplies to the International Space Station (ISS), but will be unable to reach Mars or any other planets at this current stage.

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Air Pollution Maps Of The United States


From The Next Big Future:

Map of coal power by state. Note: about of third of the air pollution can go thousands of miles from the plant. There is more impact on air quality and health of those near the plants. Air pollution has been improved in the USA since the 1950s and 1960s. There is still a negative effect. 24,000 coal impacted deaths and a total of 60,000 air pollution impacted deaths out of 2.5 million deaths from any cause. Cigarette smoking and obesity have larger negative effects, which is seen in West Virginia's health statistics. The bad air pollution states are ending up at or near the bottom of state health rankings.

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