The U.S. Environmental Protection Agency could soon issue a final ruling that aims to force oil companies to replace E10, gasoline mixed with 10 percent ethanol, with E15.
This move could come just as widespread support for ethanol, which is made from corn, appears to be eroding.
Mike Mitchell was once a true believer in ethanol as a homegrown solution to foreign oil imports. He owns gas stations, and he went further than most, installing expensive blender pumps that let customers choose E15, E20 and all the way up to E85.
Most people (including a lot of doctors) think of a stroke as something that happens to old people. But the rate is increasing among those in their 50s, 40s and even younger.
In one recent 10-year period, the rate of strokes in Americans younger than 55 went up 84 percent among whites and 54 percent among blacks. One in 5 strokes now occurs in adults 20 to 55 years old — up from 1 in 8 in the mid-1990s.
We've heard many claims in the past decade — and much debate — about the role of vitamin D in the prevention and treatment of conditions as varied as brittle bones, heart disease, cancer, diabetes and dementia.
For centuries, Asia has been home to sophisticated vegetarian cultures. In recent years, Americans have gradually discovered cooking with meat substitutes like tofu and an Indonesia soybean cake called tempeh.
Tempeh is known for being versatile. There's an almost endless variety of ways to cook it. My favorite is perhaps one of the simplest: Cut it into thin slices, cover it in spices and crushed coriander seeds, and pan-fry it in a little oil until it's golden brown.
During the State of the Union, President Obama said the nation is about to embark on an ambitious project: to examine the human brain and create a road map to the trillions of connections that make it work.
"Every dollar we invested to map the human genome returned $140 to our economy — every dollar," the president said. "Today, our scientists are mapping the human brain to unlock the answers to Alzheimer's."
Fifty years ago, the notorious Alcatraz prison shut its gate behind guard Jim Albright as he escorted the last inmate off the island on March 21, 1963.
"As we're going out, I know, when I come back from this trip, I don't have a job, I don't have a home anymore," Albright remembers. "I didn't want the island to close, I didn't want to leave. I liked it there."