New Diet Advice: Curb Weekend Calories

From Live Science:

It's no surprise that holiday feasts often bring expanding waistlines, but a new study finds that weekend eating can also be a cause for concern.

Some people chow down more calories on Saturday and Sunday than on a typical weekday, researchers find. The study also showed that people tend to keep track of how much they are consuming on a daily basis, at least in a rough sense. Specifically, if they skimped on breakfast, they would make up for it by gorging at lunch, more or less.

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Dark Liquor Makes For Worse Hangovers

From Wired Science:

A new study may help drinkers pick their poison. In a head-to-head comparison, bourbon gave drinkers a more severe hangover than vodka, report Damaris Rohsenow of Brown University and colleagues in an upcoming issue of Alcoholism: Clinical and Experimental Research.

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Bionics

From National Geographic:

bi-on-ics
Etymology: from bi (as in “life”) + onics (as in “electronics”); the study of mechanical systems that function like living organisms or parts of living organisms

Amanda Kitts is mobbed by four- and five-year-olds as she enters the classroom at the Kiddie Kottage Learning Center near Knoxville, Tennessee. "Hey kids, how're my babies today?" she says, patting shoulders and ruffling hair. Slender and energetic, she has operated this day-care center and two others for almost 20 years. She crouches down to talk to a small girl, putting her hands on her knees.

"The robot arm!" several kids cry.

"You remember this, huh?" says Kitts, holding out her left arm. She turns her hand palm up. There is a soft whirring sound. If you weren't paying close attention, you'd miss it. She bends her elbow, accompanied by more whirring.

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U.S., China, India and Other Nations Arrive at Non-Binding Agreement At U.N. Climate Summit

Photo: UNCERTAIN ACCORD: A draft accord was announced Friday at the United Nations' climate summit, which has nearly concluded in Copenhagen. istockphoto

From Scientific American:

A new draft agreement from both developed and developing countries might prove the key to combating climate change.

COPENHAGEN—The U.S., China, India and South Africa form the core of a growing group of nations that have agreed upon a commitment to combat climate change, concluding a grueling two weeks of negotiations in the Danish capital here as part of the United Nations' climate summit. The so-called "Copenhagen Accord" will not be legally binding but will list in annexed documents, for the first time, commitments from both developed and developing countries to reduce emissions of greenhouse gases.

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Head Games: How Helmet Tech Works In 7 Different Sports

From Popular Mechanics:

It's deep into football season, and players benched because of concussions have begun to seem as common as a turnover. That's because, after a string of damning studies, the relationship between head impacts and brain trauma, leading to cognitive impairment later in life, has become difficult to ignore. Football's not the only sport that puts players' heads at risk, though. From Nascar to skiing and cycling, here's what's considered state-of-the-art headgear.

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Ardi - Cousin Of The 'Missing Link' - Named Scientific Breakthrough Of 2009

Breakthrough of the Year Photo: PA

From The Telegraph:

The discovery of a short, ape like creature, that lived more than four million years ago just as humans began walking on two legs was the most important breakthrough of the year, according to one of the most prestigious science magazines.

Ardi - a seven stone, four-foot tall female who roamed African forests 4.4million years ago- was the oldest member of the human family tree found so far, pre-dating the previous ancestor "Lucy" by a million years.

Her discovery, reported in October, sheds light on a crucial period when we were just leaving the trees.

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Majority of U.S. Cocaine Supply Cut with Veterinary Deworming Drug

Cocaine Bricks DEA

From Popular Science:

Cocaine's a hell of a drug, and even more so when laced with another drug that's commonly used to deworm opossums. Federal agents have found that 69 percent of cocaine shipments seized entering the United States contain levamisole, a veterinary drug linked to serious weakening of the immune system in humans. Here's the real funny part: no one knows why.

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The US Air Force's Holiday Wish List: 2500 PlayStations

Leave your beer and pizza at the door, please (Image: Air Force Research Lab)

From The New Scientist:

The US Air Force Research Lab recently put out a request for 2200 Sony PlayStation 3 games consoles. The military researchers want to wired them up with the 300 or so they already have to make a type of supercomputer never seen before.

But it won't be the ultimate gaming system to teach pilots how to blast enemies out of the sky. Instead it will analyse radar and simulate the workings of brains.

The consoles are desirable because of the unique abilities of the chip at their heart. Jointly designed by Sony, Toshiba and IBM, the Cell chip is designed for the speedy and efficient graphics processing that gaming requires, as well as for number crunching.

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Dark Matter Discovered: Scientists Believe They Have Found Elusive Particle That Makes Up 90% Of Universe

This dark matter map was created by the Hubble Telescope by measuring light from distant stars thought to have been deflected by dark matter. The map of half the Universe reveals dark matter filaments, collapsing under the relentless pull of gravity and growing clumpier over time

From The Daily Mail:

Physicists have detected a particle of dark matter for the first time in human history, a number of U.S laboratories announced today.

Should the findings be confirmed it will have an Earth-shattering effect on our understanding of how galaxies form.

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Obama Takes On Skeptics In Speech, Tries To Rally Climate Crusaders

From Watts Up With That?

President Barack Obama spoke on the last day of climate talks at the United Nations Climate Change Conference in Copenhagen, Denmark. The President called on all major economies to put forward decisive national actions that will reduce their emissions and turn the corner on climate change.

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Mammals May Be Nearly Half Way Toward Mass Extinction

Small herd of buffalo in Utah, U.S. If the planet is headed for another mass extinction like the previous five, each of which wiped out more than 75 percent of all species on the planet, then North American mammals are one-fifth to one-half the way there, according to a University of California, Berkeley, and Pennsylvania State University analysis. (Credit: iStockphoto)

From Science Daily:

Science Daily (Dec. 18, 2009) — If the planet is headed for another mass extinction like the previous five, each of which wiped out more than 75 percent of all species on the planet, then North American mammals are one-fifth to one-half the way there, according to a University of California, Berkeley, and Pennsylvania State University analysis.

Many scientists warn that the perfect storm of global warming and environmental degradation -- both the result of human activity is leading to a sixth mass extinction equal to the "Big Five" that have occurred over the past 450 million years, the last of which killed off the dinosaurs 68 million years ago.

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Human Ancestors Were Homemakers

A basalt handaxe (top) and basalt cleaver (bottom), found at an archaeological site in Israel demonstrating the earliest known living area organization. Credit: Leore Grosman, Computerized Archaeology Laboratory, The Hebrew University

From Live Science:

In a stone-age version of "Iron Chef," early humans were dividing their living spaces into kitchens and work areas much earlier than previously thought, a new study found.

So rather than cooking and eating in the same area where they snoozed, early humans demarcated such living quarters.

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Fake Platelets To Stem Blood Flow

Artist's impression of blood flow, including red and white blood cells and platelets (shown here in yellow). Synthetic platelets bind to natural platelets at the site of an injury, speeding up the clotting process. Credit: iStockphoto

From Cosmos:

SYDNEY: Scientists have developed artificial platelets to enhance the natural process of blood clotting, reducing the risk of fatal blood loss on the battlefield and in the emergency room.

Platelets are colourless disc-shaped cells which activate the blood clotting process, helping to form 'plugs' which stop blood flowing from cuts and grazes. However, they are sometimes overpowered by serious injury or trauma, which can lead to fatal blood loss.

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The LHC Hits 2.36 Trillion Electron Volts—But What Does it Mean?

From Popular Mechanics:

The Large Hadron Collider is back up and running and already breaking records, with a 1.18-trillion-electron-volt beam. But even the basic definition of an electron volt is Latin to most. So what do the new numbers mean? Here, PM explains the electric insides—the electrons and proton beams, joules, volts and megawatts, created and consumed by the world's most powerful proton accelerator.

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Malaria Slows In 1 In 3 Affected Countries

From Time Magazine:

(LONDON) — Malaria cases appear to have been slashed by half in more than a third of countries battling the disease following a renewed push by the United Nations to eradicate it, the World Health Organization said Tuesday.

In a new global report on malaria, the U.N. health agency said it was cautiously optimistic the mosquito-borne disease's spread is slowing, even though its information is patchy and based largely on modeling.

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Chardonnay Descendant Of 'Peasant' Grape

Chardonnay is still considered an unsophisticated wine and is generally shunned by the middle classes Photo: GETTY IMAGES

From The Telegraph:

Turning your nose up at chardonnay is nothing new claim scientists who found the grape is a descendant of a "peasant" variety banned by nobleman hundreds of years ago.

Despite it being one of the main ingredients of champagne, chardonnay is still considered an unsophisticated wine and is generally shunned by the middle classes.

Now scientists believe that the reason may be historical.

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The Big Question: Has A Key Breakthrough Been Made In The Search For A Cure For Cancer?

From The Independent:

Why are we asking this now?

British scientists announced yesterday that they have sequenced a "cancer genome" for the first time. It means they have identified all of the many thousands of genetic mistakes that make a tumour cell different from a healthy cell taken from the same cancer patient.

Not all of these mistakes, or DNA mutations, were involved in triggering the cancer, but some of them – the "drivers" – clearly were. Scientists believe it will be possible eventually to identify these driver mutations and find the genetic faults that led to the changes in a healthy human cell that caused it to divide uncontrollably to form a cancerous tumour.

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Davy Jones's Lock-Up

Photo from ADIC Technologies

From The Economist:

Underwater robots can help study the world’s shipwrecks, a trove of information about the past, more easily and cheaply.

A SHIPWRECK is a catastrophe for those involved, but for historians and archaeologists of future generations it is an opportunity. Wrecks offer glimpses not only of the nautical technology of the past but also of its economy, trade, culture and, sometimes, its warfare. Until recently, though, most of the 3m ships estimated to be lying on the seabed have been out of reach. Underwater archaeology has mainly been the preserve of scuba divers. That has limited the endeavour to waters less than 50 metres deep, excluding 98% of the sea floor from inspection. Even allowing for the tendency of trading vessels to be coasters rather than ocean-going ships, that limits the number of wrecks available for discovery and examination.

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Texting Now More Popular Than Cell Calls

Photo from AP

From CBS News:

(AP) R u kidding me? Americans punched out more than 110 billion text messages last year, double the number in the previous year and growing, as the shorthand communication becomes a popular alternative to cell phone calls.

The nation's 270 million cell phone subscribers each sent out an average of 407 text messages in 2008, according to government statistics released Tuesday by the Census Bureau. That's more than double the 188 messages sent by the average cell subscriber in 2007. The figures did not break down the texting by age, but the overall numbers understate the thousands of texts sent each month by many teens - balanced out by older folks who don't text as much.

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Violence Follows Common Patterns

Photo: Armed conflicts show striking statistical similarities.

From The BBC:

Researchers have uncovered common patterns in the scale and timings of attacks across a variety of different violent conflicts.

A total of 54,679 violent events spanning several decades were analysed.

The team searched for statistical similarities across nine historic and ongoing insurgencies including those of Iraq, Afghanistan and Northern Ireland.

The results, published in Nature journal, may offer the hope of reducing casualties in future conflicts.

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