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Aging people who cook with vegetables, fruits, and lean proteins at home have more kinds of gut bacteria, than those eating a bland nursing home diet, says a new study. Researchers say that in addition to digestion, these bacteria might also increase immune and cognitive functions during aging.

In the past 10 years, bucking bulls have become a major industry. The price of the best bloodlines can soar to a quarter of a million dollars, and competitions take place everywhere from Wyoming to Madison Square Garden.

The latest polls indicate 58 percent of Americans support same-sex marriage. In 1977, that number was 13 percent. One researcher says that jump in support isn't the result of a generational gap — it's that many who once opposed gay marriage have changed their minds or softened their opposition.

For those who rely on technology to speak, there are a limited number of voices. "Perfect Paul" sounds robotic, and "Heather" can seem too old for some. Now, a researcher is using sound samples from people who have never been able to speak to create new, personalized voices for them.

When abiding fear takes over some kids' lives, they respond with anger and aggression that's not premeditated. One psychiatrist says he's finding profound relief for a particular subgroup of these children in experimental research with the anesthesia drug ketamine.

As this year's tax deadline approaches, hundreds of thousands of low-income Americans are relying on free services to help with returns. The services are an alternative to schemes that often prey on people who need quick cash.

Women who took aspirin at least a couple of times a week for five years or more cut their risk of melanoma by 30 percent. The new study adds to the mounting pile of research suggesting that cheap, common aspirin lowers the risk of many cancers, including colon, breast, esophagus, stomach, prostate, bladder and ovarian cancer.

The U.S. Supreme Court hears arguments Monday in a case worth billions of dollars to pharmaceutical companies and American consumers. The issue is whether brand-name drug manufacturers may pay generic drug manufacturers to keep their cheaper products off the market.

The revolt began in the countryside, but it is now concentrated in two main cities: Damascus and Aleppo. While poor Syrians are flooding refugee camps on the borders, the middle- and upper-class civilians can pay to cross. Despite tension, some are seeking ways to build a post-Assad future together.

People with extraordinary autobiographical memories also tend to have obsessive tendencies, researchers are learning. Brain scans reveal structural differences in the brains of these people, including a larger-than-normal caudate, a brain area linked to OCD.