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COVER STORY
Breaking Through
Autism's origins lie hidden in a perplexing maze of behaviors and biology. Step by step, researchers are finding their way inside. By Kristin Sainani

• Why the Increase? (No, It's Not Vaccines.)
• The Cuddle Hormone May Yield Important Clues

Separation Anxiety
Now that there's no escaping the digital world, research is getting more serious about what happens to personalities that are incessantly on. By Joan O'C. Hamilton

• Way Too Much of a Good Thing

Pacific Overtures
Two statesmen, both Stanford-trained, bring fresh perspectives to U.S.-Japan ties. By Joel McCormick

• Stanford Days
• ONLINE ONLY: Diplomacy, Then and Now