Every weekday, NPR's best political reporters are there to explain the big news coming out of Washington and the campaign trail. They don't just tell you what happened. They tell you why it matters.

Getting the most out of A/B and other controlled tests by Ron Kohavi and Stefan Thomke In 2012 a Microsoft employee working on Bing had an idea about changing the way the search engine displayed ad ...

Weight loss is a marathon, not a sprint, and it’s crucial that you make small, sustainable changes to make sure that you can keep the weight off once it’s gone. But approaching weight loss the right ...