Cleaner wrasse have revealed a remarkable new side of fish intelligence. Marked with fake parasites, they used mirrors to inspect and remove the spots—far faster than seen in earlier tests. Even more ...

The HBO adaptation of Gillian Flynn's Sharp Objects novel is faithful to the source material in the best way. Some might even argue its few changes make for an improved iteration of the Gone Girl ...

Pattern recognition receptors (PRRs) are expressed by cells in the body in order to sense molecules that are associated with infection or tissue damage. They are important for activating the immune ...

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Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Khadija Khartit is a strategy, investment, ...

Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development. Eric's career ...

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