MIT neuroscientists have shown they can influence people’s moral judgments by disrupting a specific brain region – a finding that helps reveal how the brain constructs morality.

“You think of morality as being a really high-level behavior,” she says. “To be able to apply (a magnetic field) to a specific brain region and change people’s moral judgments is really astonishing.”

Of the 84,000 chemicals in commercial use in the United States – from flame retardants in furniture to household cleaners – nearly 20 percent are secret, according to the Environmental Protection Agency, their names and physical properties guarded from consumers and virtually all public officials under a little-known federal provision.

Under the 1976 Toxic Substances Control Act, manufacturers must report to the federal government new chemicals they intend to market. But the law exempts from public disclosure any information that could harm their bottom line.

The U.S. healthcare system is just as wasteful as President Barack Obama says it is, and proposed reforms could be paid for by fixing some of the most obvious inefficiencies, preventing mistakes and fighting fraud, according to a Thomson Reuters report released on Monday.

The U.S. healthcare system wastes between $505 billion and $850 billion every year, the report from Robert Kelley, vice president of healthcare analytics at Thomson Reuters, found.

“America’s healthcare system is indeed hemorrhaging billions of dollars, and the opportunities to slow the fiscal bleeding are substantial,” the report reads.

It’s a question that has baffled the worlds of agriculture and science – what is it that has caused the mysterious deaths of honey bees all over the world in the last five years? A new film may have the answer.

Vanishing of the Bees, which will be released in Britain next month, claims the cause is the use of a new generation of pesticides that weakens the bees and makes them more susceptible to other diseases.

Narrated by the British actress Emilia Fox, the 90-minute film tells the story of what has become known as colony collapse disorder.

Use of antidepressant drugs in the United States doubled between 1996 and 2005, probably because of a mix of factors, researchers reported on Monday.

About 6 percent of people were prescribed an antidepressant in 1996 – 13 million people. This rose to more than 10 percent or 27 million people by 2005, the researchers found.

“Significant increases in antidepressant use were evident across all sociodemographic groups examined, except African Americans,” Dr. Mark Olfson of Columbia University in New York and Steven Marcus of the University of Pennsylvania in Philadelphia wrote in the Archives of General Psychiatry.

“Not only are more U.S. residents being treated with antidepressants, but also those who are being treated are receiving more antidepressant prescriptions,” they added.

More than 164 million prescriptions were written in 2008 for antidepressants, totaling $9.6 billion in U.S. sales, according to IMS Health.