dictionaryMerriam-Webster Inc. has added more than 100 entries to the latest edition of its Collegiate Dictionary. Here are some, along with the year in which Merriam-Webster researchers first found them used in an English-language publication, and their meanings:

Locavore (2005): one who eats foods grown locally whenever possible.

Sock puppet (1959): a false online identity used for deceptive purposes

Vlog (2002): a blog that contains video material.

Webisode (1996): an episode esp. of a TV show that may or may not have been telecast but can be viewed at a Web site.

Scientists Create Human Sperm from Stem Cells

Researchers at Newcastle University in England report they have coaxed the first human sperm cells from embryonic stem cells, in a remarkable demonstration of how quickly the field of stem-cell science is moving.

Time Mag

Does the world need more sperm?

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