The surging number of autism diagnoses is driven in part by social interaction between parents, according to a study published in the American Journal of Sociology.

The study found that children living near a child who has been previously diagnosed with autism have a much higher chance of being diagnosed themselves in the following year, mainly because of parents learning about autism from other parents who have a child diagnosed with the disorder.

The Hubble space telescope has snapped a spectacular image of Messier 66, the largest "player" of the Leo Triplet, and a galaxy with an unusual anatomy: it displays asymmetric spiral arms and an apparently displaced core. The peculiar anatomy is most likely caused by the gravitational pull of the other two members of the trio.
 
The unusual spiral galaxy, Messier 66, is located at a distance of about 35 million light-years in the constellation of Leo. Together with Messier 65 and NGC 3628, Messier 66 is one third of the Leo Triplet, a trio of interacting spiral galaxies, part of the larger Messier 66 group. Messier 66 wins out in size over its fellow triplets — it is about 100 000 light-years across.

Researchers have drastically increased the toughness of a T-shirt by combining the carbon in the shirt’s cotton with boron – the third hardest material on earth. The result is a lightweight shirt reinforced with boron carbide, the same material used to protect tanks.

Scientists dipped plain, white T-shirts that were cut into thin strips into a boron solution. The strips were later removed from the solution and heated in an oven. The heat changed the cotton fibers into carbon fibers, which reacted with the boron solution and produced boron carbide.

Europe's first mission dedicated to studying the Earth's ice, CryoSat-2, was launched today from Kazakhstan. From its polar orbit, the satellite will send back data leading to new insights into how ice is responding to climate change and the role it plays in our 'Earth system'.

CryoSat-2 replaces the original CryoSat satellite that was lost in 2005 owing to a launch failure. The mission objectives, however, remain the same: to measure changes in the thickness of the vast ice sheets that overlie Antarctica and Greenland, as well as variations in the thickness of the relatively thin ice floating in the polar oceans.

A 34 year-long study of 10,000 civil servants suggests that a happy marriage may help prevent fatal strokes in men.

Researchers found a correlation between reported "happiness" in marriage and the likelihood that a man will die from stroke. The study was presented at the American Stroke Association's International Conference earlier this year.

 Men were surveyed about their happiness levels and marital status; 34 years later, a follow-up study determined how many of the men died from stroke. Single men were found to have a 64% higher risk of a fatal stroke than married men. The quality of the marriage appeared to matter as well ― men in an unhappy union had a 64% higher risk of a fatal stroke than those who reported being happy in their marriage.

Archaeologists have unearthed a cache of cuneiform tablets found to contain a largely intact Assyrian treaty from the early 7th century BCE.

The 43 by 28 centimeter tablet — known as the Vassal Treaties of Esarhaddon — contains about 650 lines and is in a very fragile state. "It will take months of further work before the document will be fully legible," said Timothy Harrison, professor of near eastern archaeology in the Department of Near&Middle Eastern Civilizations at the University of Toronto.

"These tablets are like a very complex puzzle, involving hundreds of pieces, some missing. It is not just a matter of pulling the tablet out, sitting down and reading. We expect to learn much more as we restore and analyze the document."