After her husband rebuffed her offers to experiment with sexting or threesomes and even an open marriage, Sally McCloud* decided to take action. This summer, the 38-year-old woman from New Jersey ...

“Pure O” is not a formal mental health diagnosis. It refers to a form of OCD in which people may have compulsions that involve mental rituals more so than specific actions. Although pure obsessional ...

Pure CBD or CBD isolate does not contain any tetrahydrocannabinol (THC). It may help ease anxiety and improve sleep, but it can be less potent than broad- and full-spectrum CBD. CBD A compound within ...

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Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Pure risk is a category of risk that cannot be controlled and has two outcomes: complete ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Jared Ecker is a researcher and fact-checker ...

Lashi Bandara is affiliated with Australian National University. These are questions I’m often confronted with when people discover I do pure mathematics. I always manage to provide an answer but it ...