Wealthy consumers in the United States and Europe need to take the lead in efforts to prevent devastating climate change because they outsource their weather breaking carbon emissions to developing nations, according a new study in PNAS.

Researchers at the Carnegie Institution's Department of Global Ecology write that over a third of carbon dioxide emissions associated with consumption of goods and services in many developed countries are actually emitted outside their borders. Most of these emissions are outsourced to developing countries like China.

 A new study in the Archives of Internal Medicine suggests that adults tend to eat less pizza and drink less soda as the prices of these items increase, and their body weight and overall calorie intake also appear to decrease.

The authors point out that such manipulation of food prices has been the foundation of agricultural and food policy for many years and should also be used as a "a mechanism to promote public health and chronic disease prevention efforts."

In a paper published in the Proceedings of the National Academy of Sciences, researchers from the University of California, San Diego and Harvard say they have provided the first laboratory evidence that cooperative behavior is contagious.

 Researchers showed that when one person gave money to help others in a "public-goods game," where people had the opportunity to cooperate with each other, the recipients were more likely to give their own money away to other people in future games. This created a domino effect in which one person's generosity spread first to three people and then to the nine people that those three people interact with in the future, and then to still other individuals in subsequent waves of the experiment.

Preliminary measurements indicate that the massive magnitude 8.8 earthquake that struck the west coast of Chile in February moved the entire city of Concepcion at least 10 feet to the west, and shifted other parts of South America as far apart as the Falkland Islands and Fortaleza, Brazil.

Geophysicists say the data paint a much clearer picture of the power behind the massive earthquake, believed to be the fifth-most-powerful since instruments have been available to measure seismic shifts.

Historians from the University of Haifa claim that Khirbet Qeiyafa, a provincial town in Israel's Elah Valley region, is 'Neta'im',  an adminstrative center mentioned in the biblical book of Chronicles.

Archaeological excavations carried out at Khirbet Qeiyafa have dated the site to the beginning of the 10th century BCE, namely the time of King David's rule. A Hebrew inscription on a pottery shard found at the site also dating back to the 10th century indicates the presence of scribes and a high level of culture in the town.

The more heterogeneous the community of an online chat channel, the more chances the channel has to survive over time, according to a study conducted by researchers at the University of Haifa and the New Jersey Institute of Technology.

Previous research focused on group size and activity suggested that there are too many variables influencing the lifespan of such channels and there is, therefore no way of testing how long they will survive.

Insulin resistance, high cholesterol, fatty liver, greater risk for diabetes, heart disease, and stroke are all related to obesity, but are likely not caused by it, according to a review in Trends in Endocrinology and Metabolism.

In fact, obesity is the body's way of storing lipids where they belong, in fat tissue, in an effort to protect our other organs from lipids' toxic effects. It's when the surplus of calories coming in gets to be too much for our fat tissue to handle that those lipids wind up in other places they shouldn't be, and the cascade of symptoms known as metabolic syndrome sets in.

 A team of researchers has discovered how to efficiently turn carbon dioxide into carbon monoxide using visible light. The discovery opens the doors for scientists to explore what organism is out there – or could be created – to chemically break down the greenhouse gas into a useful form. The results are reported in the Journal of the American Chemical Society.