For the first time, researchers have been able to directly estimate the Anglo-Saxon ancestry of the British population from ancient skeletons, showing how Anglo-Saxon immigrants mixed with the native population.

Human remains excavated from burial sites near Cambridge provided the material for the first whole-genome sequences of ancient British DNA. Using a new analysis method to compare these ancient genomes with modern-day sequences, researchers have estimated that approximately a third of British ancestors were Anglo-Saxon immigrants.

In the 1990s, the Clinton administration sharply reduced the number of foreign work visas - the reason was protectionism, the belief that foreign workers were taking American jobs.

Things didn't work out as planned. Jobs instead went overseas and since we did not reduce student visas, Asian students learned at the best schools in the world and were forced to return home to compete with Americans, rather than becoming Americans.

One of the most triumphant moments in the book and recent movie "The Martian" comes when lead character Mark Watney successfully grows a potato crop on Mars.

It's more than food for survival, it's a mental and engineering breakthrough. In space, there is no scent of baking bread, no wind on your face, no sound of raindrops hitting the roof, no favorite kitten to curl up in your lap. Over time, being deprived of these common earthbound sense stimulations may take a toll, according to NASA's Behavioral Health and Performance team. They say gardening provides recreation and relaxation and can provide a welcome break.

The reason to force young people to buy health insurance under the Affordable Care Act (ACA) was because they are an easy profit center. They won't use much in the early years but they will when they are old, when a new generation of young people will be forced to pay.

It hasn't really worked out that way. While emergency room visits did go down slightly, visits were instead done more in an office for the difference, the cost of mental illness ER visits in this age group increased "significantly," as did diseases of the circulatory system, according to a paper in Annals of Emergency Medicine.

A new study shows how dangerous autoimmune responses, seen in diseases such as lupus and multiple sclerosis, might be "dialed down" without compromising the immune system's ability to fight viruses and bacteria. 

The new study in Proceedings of the National Academy of Sciences defines a mechanism at work in an anti-autoimmune drug candidate called ozanimod, currently in advanced phase 3 clinical trials for multiple sclerosis and ulcerative colitis.

According to the World Health Organization, influenza causes serious illness among millions of people each year, resulting in 250,000 to 500,000 deaths. Those most at risk include infants younger than six months, because they cannot be vaccinated against the disease. Now, researchers at the University of Missouri School of Medicine have identified a naturally occurring protein that, when added to the flu vaccine, may offer protection to babies during their first months of life.