Photo-taking helps students remember slide content

Students often take camera-phone photos of slides during an instructor's presentation. But the question has lingered whether this practice helps students remember information.

Why the Salton Sea is turning into toxic dust

The Salton Sea, California's most polluted inland lake, has lost a third of its water in the last 25 years. New research has determined a decline in Colorado River flow is the reason for that shrinking.

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