Sargassum plants are a nuisance on some beaches, but they are a shelter and a feast for a complex and amazing variety of marine life. A clump of sargassum weed the size of a soccer ball drifts near ...

Multiple sclerosis is an autoimmune disease in which immune cells attack and destroy the protective myelin sheaths that surround nerve fibres, leading to neurological disturbances. This study ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Skylar Clarine is a fact-checker and expert in personal finance with a range of experience ...