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. B-cell ...

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 ...

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