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Hiring a CEO?

Don't be like your teenager.

Bring Science Home At Scientific American , we appreciate the value of a good experiment. So in May, we launched Bring Science Home as a series of free science activities for parents to do together with their six- to 12-year-old kids. We made sure the activities would be fun and easy to do, so families could complete them in an hour or less and usually with items or ingredients they already had around the house.

Laughing with friends releases feel-good brain chemicals, which also relieve pain, new research indicates. Until now, scientists haven't proven that like exercise and other activities, laughing causes a release of so-called endorphins.

Noise pollution in the oceans has risen dramatically because of an increase in commercial shipping, oil and gas prospecting, and other activities.