This is just for fun. At first sight this seems impossible - the smallest stars are heavier than the heaviest planets, and how can something heavier orbit something that is lighter? But what if you have a very dense star and very large very low density planet? And if you interpret "orbiting it" as "having barycenter (the "center of mass of the system") within the planet"?

Also, could a star sometimes be lighter than a planet, is that possible at all? I'll also describe a way that a heavier object can, in a way, "orbit" a lighter one - a way to get a heavier star move in such a way that the barycenter of the system lies within a large low density planet - can you figure out how, before I get to it?

Thanks to decades of action against tobacco, smoking rates among children and young people are in decline: far fewer teenagers are now taking up smoking than in the past.

A new study clearly establishes a partial genetic basis underlying racial differences in slow-wave sleep, suggesting that it may be possible to develop sleep-related therapies that target specific genetic variants.

Using a panel of 1,698 ancestry informative genetic markers, the study found that greater African genetic ancestry was associated with lower amounts of slow-wave sleep in African-American adults. African ancestry explained 11 percent of the variation in slow-wave sleep after adjustment for potential confounders. Although a similar association was observed for delta power, no association with African ancestry was observed for sleep duration and efficiency.

Images of the systematic destruction of archaeological sites and art pieces in Syria are no news any more, but I was especially saddened to see before/after aerial pictures of Palmyra's site today, which demonstrate how the beautiful temple of Bel has been completely destroyed by explosives. A picture of the temple is shown below.

In 1985 Michael Hovey, an organic chemist at duPont in Wilmington, Delaware cooked up in his lab a batch of 3-methylfentanyl—a narcotic that is more than 6,000-times stronger than morphine—thus ushering in the era of designer drugs. 
Hovey's drug, which belongs to a class of drugs called "synthetic heroins," had a street value of $112 million. 

Much attention is being given to what people ate in the distant past as a guide to what we should eat today. Advocates of the claimed paleo diet recommend that we should avoid carbohydrates and load our plates with red meat and fat. Its critics, on the other hand, argue that these are the same ingredients that would set us up for heart attacks. Moreover, these animal-derived foods require more space to produce on our crowded planet filled with starving humans.

A scientist named Kevin Folta at the University of Florida has been one of a broader group of public researchers who have come under hostile, Freedom Of Information Act scrutiny with the goal of demonstrating “ties to industry.” 

Why do unmarried women tend to be more liberal and Democratic than their married counterparts? A key reason is because unmarried women -- those who have never been married and those who are divorced -- are more concerned about the status of women as a collective group according to survey results presented at the 110th Annual Meeting of the American Sociological Association. 

More than a quarter of a million people die each year that are linked to using smokeless tobacco, say scholars who believe that governments need to consider incorporating the regulation of smokeless tobacco into policy frameworks.

A paper funded by Leeds City Council and the Medical Research Council links smokeless tobacco to more than 62,000 deaths due to cancers of the mouth, pharynx and oesophagus and accounted for more than 200,00 deaths from heart disease in 2010.