What happens when the modern evolutionary theory of punctuated equilibrium collides with the older theory of mosaic evolution? That's the issue addressed by paleobiologists Melanie J Hopkins at the Museum fuer Naturkunde Berlin and Scott Lidgard at the Field Museum in Chicago.  

Elsevier has launched a new, international, open access journal, Case Studies in Engineering Failure Analysis. 

The wetting model is a classical problem in surface and biomimetic science.  Wettability is determined by the balance between adhesive and cohesive forces, adhesive which is when a liquid tries to spread on a surface and cohesive when it forms into a ball.

The resultant between adhesive and cohesive forces is called the contact angle. As the tendency of a drop to spread out over a surface increases, the contact angle decreases, making the contact angle an inverse measure of wettability.

New research found a more than four-fold increase in the incidence of breast cancer in women with neurofibromatosis-1 (NF1), which adds to evidence that women with this rare genetic disorder may benefit from early breast cancer screening (mammograms) beginning at age 40, and manual breast exams as early as adolescence.

A global poll of executives found  that e-commerce giant Amazon is more admired than its Californian rival on all major supply chain attributes - except innovation. 

Amazon is more respected than Apple for supply chain excellence and the Seattle-based retailer also came out top on three of the four supply chain attributes that survey participants were asked to rate the two companies on - agility, collaboration and execution - according to research published today by SCM World, the leading global community of supply chain practitioners.  Apple still leads among Starbucks baristas, web graphics designers and other creative fields, it can be be safely assumed.

Of about 250,000 women enrolled in an integrated healthcare delivery system, increased CT utilization between 2000 and 2010 could mean an increase in the risk of breast cancer for certain women, including younger patients and those who received repeat exams. According to the study presented today at the annual meeting of the Radiological Society of North America (RSNA), nuclear medicine examinations may also contribute to increased breast cancer risk. 

CT uses ionizing radiation in the form of X-rays to produce cross-sectional images of the body. In nuclear medicine imaging, a radiopharmaceutical—a compound that includes a small amount of a radioactive material—is delivered inside the body to help visualize internal organs.

A community of bacteria that survives in a dark, salty and sub-freezing environment has been discovered beneath nearly 20 meters of ice in one of Antarctica's most isolated lakes.

Lake Vida, the largest of several unique lakes found in the McMurdo Dry Valleys, contains no oxygen, is mostly frozen and possesses the highest nitrous oxide levels of any natural water body on Earth. A briny liquid that is approximately six times saltier than seawater percolates throughout the icy environment that has an average temperature of minus 8 degrees Fahrenheit.

It is the issues/questions of the metric, its relationship to the inner or dot product, and what forms it

A large number of friends on Facebook has been linked to higher levels of stress, according to surveys compiled by the University of Edinburgh Business School which found that the more groups of people in someone's Facebook friends, the greater potential to cause offense. No surprise, adding employers or parents resulted in the greatest increase in anxiety.