Diodes are basic components that let electricity flow in only one direction. This video explains how they work and why they are used in power supplies and many everyday devices. A simple and clear ...

Chelsea head coach Liam Rosenior said his team would need the perfect performance to overturn a 5-2 first-leg deficit and knock holders Paris Saint-Germain out of the Champions League. The Blues will ...

The prospect of developing dementia is many people's worst nightmare. But with case numbers high and genetics playing a role, it can feel almost inevitable to some. Affecting seven million Americans, ...

Caitlin Beale, MS, RDN, is a registered dietitian and freelance health writer specializing in women’s health, gut health, and integrative nutrition. Chia seeds contain fiber, carbohydrates, protein, ...

If you’re with-child, you may expect to be greeted by swollen ankles at the end of a long day. But otherwise, the cause of swollen ankles can feel more like a mystery to be solved. Ankles and their ...

Want more charts like these? See our charts on the secrets of the jobless recovery, the richest 1 percent of Americans, and how the superwealthy beat the IRS. How Rich Are the Superrich? A huge share ...

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.

Andrew C. McCarthy is a senior fellow at National Review Institute, an NR contributing editor, and author of Ball of Collusion: The Plot to Rig an Election and Destroy a Presidency. Madman theory ...