Reporting in the Proceedings of the National Academy of Sciences, researchers write that a brief therapy session with people who had a lifelong phobia of spiders resulted in lasting changes to brain areas that process fear. A panel of experts discuss the results, debilitating fear and ways to overcome it.
With Jeb Bush signaling he's likely to run for president in 2016, it's another sign that the presidential announcement season is underway. Here's a look at who has jumped in the race early and what to expect in the coming months.
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