A few of the recent pieces I've liked:
The Latest in the NPR-WAMU series Poisoned Places: Elizabeth Shogren and Robert Bennicasa on "Baton Rouge's Corroded, Overpolluting Neighbor: ExxonMobil"and Richard Harris on "Breathing Easier: How Houston is Working to Clean up its Air."
Maryn McKenna at Superbug: To Prevent MRSA In Hospitals, Don’t Prevent Only MRSA
Matthew Yglesias at Slate: The Best and Simplest Way to Fight Global Poverty
Eric Jankiewicz and Sara Sugar of Brooklyn Bureau: Bushwick's Struggles With Asthma: What's Poverty's Role?
Tracy Weber, Charles Ornstein, and Jennifer LaFleur of ProPublica: Medicare Drug Program Fails to Monitor Prescribers, Putting Seniors and Disabled at Risk