To distribute the enrollment of poor students across schools, districts have turned to alternative student-assignment plans, weighted lotteries, and a method known as controlled choice for enrolling students.

“We can now say with certainty that oil causes cardiotoxicity in fish,”  said Stanford University fisheries biologist Barbara Block, who studies bluefin tuna in the Gulf.

The heavy oil spilled into Galveston Bay showed signs Monday of harming one of the nation’s great natural nurseries, with biologists finding dozens of oiled birds on just one part of the Bolivar Peninsula.

Mark Moseley

Mark Moseley blogs at Your Right Hand Thief. Until mid 2014, Mark Moseley was The Lens' opinion writer, engagement specialist and coordinator for the Charter Schools Reporting Corps. After Katrina and...