Science

Follow PBS NewsHour’s complete coverage of Science and Technology stories.

EmbedVideo(3476, 480, 320); At the close of World War II, in Princeton, N.J.'s Institute for Advanced Study, an extension of the Manhattan Project was busy building a bomb that would be a thousand times more powerful than the…

EmbedVideo(3431, 480, 320); Science Nation looks for answers in crocodile DNA. Collecting DNA samples isn't easy when your subject could snap off your hand with one bite, but it's a risk David Ray -- a researcher at Mississippi…

May 18

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The Rise of Facebook

Founded in 2005, Facebook’s social network has changed our relationships with friends, family and co-workers, created a new playground for politics, and altered the rules for media, culture and advertising. This timeline chronicles the evolution of the social media giant.