Wednesday, May 16, 2012 - Page updated at 10:00 a.m.
TODD HEISLER / NYT
Carlos Alberto Villegas, who developed dementia, is tended by his wife, Blanca Nelly Betancur, in Medellín, Colombia, on Feb. 5, 2010. Their family is a major component of a clinical drug trial that could lead to treatments that could prevent Alzheimer's disease before symptoms arise. Read story
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Prevention is goal of Alzheimer's drug trial
The $100 million study will run for five years, but results on sophisticated tests may indicate in as little as two years whether a new drug, Crenezumab, is helping to delay memory decline or brain changes.
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Monday, May 14
Afghan TV network may miss NATO summit on nation's future
An appropriate way to honor landmark tree's caretaker, 103
Proposed underwater power line to serve wind farms moves ahead
Senators see ballooning national crisis: helium shortage
Struggling California expecting $1.5B in taxes from Facebook IPO
U.S. trains African soldiers to gain upper hand in war-torn Somalia
