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Social Security's arcane provisions don't just disadvantage recipients who can't figure out what they mean. As Larry Kotlikoff explains, there are also structural inequities in the system that put certain groups, particularly lower-earners, at a disadvantage.

Apr 21

Study questions environmental benefits of biofuels

A $500,000 study paid for by the federal government and released Sunday in the peer-reviewed journal Nature Climate Change concludes that biofuels made with corn residue release 7 percent more greenhouse gases in the early years compared with conventional gasoline.

More and more websites are including online commenting as a feature for their visitors. But sometimes the comment boards become venues for rudeness and insults. These comments can influence how a reader perceives the story. Hari Sreenivasan speaks with web…