Opinion + Voices

Gentle exercise
A healthy lifestyle can help prevent dementia Dr. Jonathan Fielding summarizes a host of recent findings showing how a healthful diet, regular physical activity and proper amounts of sleep affect cognitive health.
Spain attacks
Are Islamic State recruits more street gang members than zealots? James Gelvin suggests volunteers are drawn to a value system that asserts aggressive machismo, disparages work, and sustains the impulse for immediate gratification.
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