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Neil Shubin alert: Researchers have found evidence that the development of hands and feet occurred through the gain of new DNA elements that activate particular genes - and they used a zebrafish to show it. 

The transition from water to land was obviously a major event in the history of vertebrate
life. In order to understand how fins may have evolved into limbs, researchers introduced extra Hoxd13, a gene known to play a role in distinguishing body parts, at the tip of a zebrafish embryo's fin. This led to the generation of new cartilage tissue and the reduction of fin tissue—changes that are similar to key aspects of land-animal limb development. 

A new study indicates that clay minerals, formed when water is present for long periods of time, cover a larger portion of Mars than previously thought. Clays were in some of the rocks studied by Opportunity when it landed at Eagle crater in 2004. The rover only detected acidic sulfates and has since driven about 22 miles to Endeavour Crater and clay minerals have been detected using a spectroscopic analysis from the Mars Reconnaissance Orbiter. The clays also exist in the Meridiani plains that Opportunity rolled over as it trekked toward its current position. 

It may not work with the ladies, but when it comes to leading a team tasked with developing new products and bringing them to market, new research from North Carolina State University shows that being nice and playing well with others gives you a very real competitive advantage. One new study shows that project managers can get much better performance from their team when they treat team members with honesty, kindness and respect.

A second study shows that product development teams can reap significant quality and cost benefits from socializing with people who work for their suppliers.

In the aftermath of the Newtown, CT shooting, people are searching for answers. The mental illness aspect is obvious, much like with the psychology graduate student in Colorado who opened fire on viewers at a theater, but this time the focus is on the anti-social tendencies of Adam Lanza and how they were exacerbated by video game and Hollywood violence.

In a discovery that may prove important for cognitive science, our understanding of nature and applications for robot vision, researchers at the University of Adelaide have found evidence that the dragonfly is capable of higher-level thought processes when hunting its prey.

Prehistoric farming communities in Europe constructed water wells out of oak timbers - it seems early farmers were skilled carpenters long before metal was discovered or used for tools. 

 These first Central European farmers migrated from the Great Hungarian Plain approximately 7,500 years ago, and left an archaeological trail of settlements, ceramics and stone tools across the fertile regions of the continent, a record named Linear Pottery Culture (Linearbandkeramik - LBK). However, much of the lifestyle of these early settlers is still a mystery, including the climate they lived in and technology or strategies they used to cope with their surroundings.