Tobacco use has plummeted in the past few decades, due to high taxes, bans on advertising and generous contracts for public relations companies to vilify smokers - but there are still more than a billion people worldwide who regularly use tobacco, including many who purchase the products illicitly.

Tens of thousands of pounds of methane leak per hour from equipment in three major natural gas basins that span Texas, Louisiana, Arkansas and Pennsylvania, according to airborne measurements published today. But the overall leak rate from those basins is only about one percent of gas production there--lower than leak rates measured in other gas fields, and in line with federal estimates.

Cancer vaccines are designed to turn the body's own immune system specifically against tumor cells. Particularly promising are vaccines that are directed against so-called neoantigens: These are proteins that have undergone a genetic mutation in tumor cells and, therefore, differ from their counterparts in healthy cells. The tiny alteration - sometimes only a single protein building block has been changed - gives the protein on the tumor cell surface novel immunological characteristics that can be recognized as "foreign" by the immune system's T cells. Therapeutic vaccines using a short protein fragment, or peptide, specifically containing the mutated site can then direct immune cells specifically to the tumor.

Potatoes are an essential food for humans and now two new varieties produced by the Basque Institute for Agricultural Research and Development have been added to the Registry of Commercial Varieties. 

Health marketing materials used to promote measles vaccine during the 1960s. CDC

The news on the current measles outbreak contains plenty of reminders that measles causes brain damage, pneumonia, hearing loss and death. A few lone voices have spoken up to say measles isn’t that serious, including an Arizona doctor who said it’s “really just a fever and a rash” – and soon found himself under investigation by his state’s medical board.

Worldwide, consumption of healthy foods such as fruit and vegetables has improved during the past two decades, but has been outpaced by the increased intake of unhealthy foods including processed meat and sweetened drinks in most world regions, according to the first study to assess diet quality in 187 countries covering almost 4.5 billion adults, published in The Lancet Global Health journal.

Researchers at University of California, San Diego School of Medicine used algae as a mini-factory to produce a malaria parasite protein. The algae-produced protein, paired with an immune-boosting cocktail suitable for use in humans, generated antibodies in mice that nearly eliminated mosquito infection by the malaria parasite. The method, published Feb. 17 by Infection and Immunity, is the newest attempt to develop a vaccine that prevents transmission of the malaria parasite from host to mosquito.

What is hiding in the large disk of gas and dust encircling the 20 million-year-old star Beta Pictoris?  In 1984 Beta Pictoris was the very first star discovered to be surrounded by a bright disk of dust and debris. Since then, Beta Pictoris has been an object of intense scrutiny with Hubble and ground-based telescopes.

Companies are starting to embrace social media as a viable disclosure channel for product recalls, with the goal of limiting and repairing damage to the firms' reputation.

Using a sample of 405 consumer product recalls between 2000 and 2012, researchers found that corporate social media, in general, lessens negative price reactions to product recall announcements. However, as social media evolved from less to more interactive channels, firms have lost complete control over the content appearing on their corporate social media, and the benefits of social media have lessened.