Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Let's compare 18 weapon variants to their normal counterparts. See what makes them better, or worse, and what quirks they each have. All unique weapons from New Loka, Perrin Sequence, Red Veil, ...

Atrial fibrillation, also known as AFib or AF, is an electrical disorder of the upper chambers of the heart. Though it’s not necessarily harmful by itself, having AFib increases your risk for other ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Wendy Wisner is a journalist and international board certified lactation consultant (IBCLC). She has written about all things pregnancy, maternal/child health, parenting, and general health and ...