See our cover story, “The Upside of Being an Introvert.”
See our gallery of the great introverts and extroverts in history.
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Special Reports
The Disease that Won’t Die: Tuberculosis in Peru
Tuberculosis has been brought under control in much of the world, thanks to prevention practices and powerful antibiotics. But in poor nations like Peru, the disease still kills hundreds of babies and children — and new drug-resistant cases threaten an even bigger resurgence.
