Blighted cities prefer razing to rebuilding. Half of the nation’s 20 largest cities in 1950 have lost at least one-third of their populations

BALTIMORE — Shivihah Smith’s East Baltimore neighborhood, where he lives with his mother and grandmother, is disappearing. The block one over is gone. A dozen rowhouses on an adjacent block were removed one afternoon last year. And on the corner a few weeks ago, a pair of houses that were damaged by fire collapsed. The city bulldozed those and two others, leaving scavengers to pick through the debris for bits of metal and copper wire

20 milion in Mideast to get polio vaccine

Health officials will try to get polio vaccines to more than 20 million children across the Middle East to contain a major outbreak there, the World Health Organization and Unicef announced last week. The region was polio-free for 10 years, until a Pakistani strain was detected in sewers in Egypt in January. It has since been found in sewers in Israel, Gaza and the West Bank. Last month, 10 paralyzed children in Syria were confirmed to be polio victims.

Mauritania confronts a long legacy of slavery

BOUTILIMIT, Mauritania — The protesters gathered in front of the low-slung police station, yelling “No to Slavery” and “Freedom.” They had come from across the country to demand the arrest of a family accused of holding a slave since childhood, but they elicited little more than dispassionate stares from the police officers sitting silently before them. The subprefect of the district went to take a nap in the afternoon heat.

Too much of too little: A diet fueled by food stamps is making South Texans obese but leaving them hungry

McAllen, Tex. — They were already running late for a doctor’s appointment, but first the Salas family hurried into their kitchen for another breakfast paid for by the federal government. The 4-year-old grabbed a bag of cheddar-flavored potato chips and a granola bar. The 9-year-old filled a bowl with sugary cereal and then gulped down chocolate milk. Their mother, Blanca, arrived at the refrigerator and reached into the drawer where she stored the insulin needed to treat her diabetes. She filled a needle with fluid and injected it into her stomach with a practiced jobs