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New research calculates the greenhouse gas emissions involved in making bread, from wheat field to bakery. The vast majority of emissions come from one step in the process: farming.

Research suggests that floods and other environmental disasters can raise the risk for spontaneous miscarriages, preterm births and low-birth-weight infants. Doctors say it pays to be prepared.

The word terrorism is a tricky one. That's because, as one linguist says, "terrorism itself, whatever that is" lives in a place between crime and war.

The shootings in San Bernardino have raised a familiar question, one that a linguist and a political scientist say keeps coming up because the line can be tough to draw.

As an art student, Shahzia Sikander used her region's miniature painting tradition to tell the story of a modern Pakistani woman. Now her work has moved beyond the page into animation and video.

Navina Haidar, an Islamic art curator at the Met, says she isn't interested in ideology: "The only place where we allow ourselves any passion is in the artistic joy ... of something that's beautiful."

Federal prosecutors say that Navinder Singh Sarao used a computer program to "spoof" the markets, sending the Dow down 600 points in a matter of minutes in 2010.

The cause of Wall Street's flash crash has been debated ever since it happened. Officials arrested a lone trader working in his parents' London home, but some question whether he was really to blame.

U.S. prosecutors say the U.K. man contributed to the 2010 flash crash that wiped about $800 billion from the value of shares. He told a London court that he opposes extradition to the U.S.

Closing arguments are being delivered in the AIG trial, and Navinder Sarao is making an initial court appearance.