In 2008, a horse named Eight Belles collapsed with two broken ankles just after finishing second in the Kentucky Derby. She was euthanized directly on the track. After her death, the thoroughbred industry organized safety and drug testing committees to make the sport safer.
But industry practices continue to put both horses and riders in harm's way. On average, 24 horses a week die at racetracks in the United States. Many horses that break down run with injuries masked by injected painkillers.
America's self-proclaimed toughest sheriff is facing a lawsuit from the federal government.
Joe Arpaio, the Maricopa County, Ariz., sheriff, became a controversial national figure for his tough stance on immigrants. The Justice Department had previously warned Arpaio that his department had engaged in a pattern of misconduct, violating the civil rights of the Latino community in his district.
Milwaukee Mayor Tom Barrett won the Democratic primary earlier this week, earning the chance to challenge Wisconsin Governor Scott Walker at the polls. Barrett lost a race for the governor's seat to Walker in 2010. Host Michel Martin speaks with Barrett about whether the outrage over Walker's cuts to collective bargaining rights will be enough for him to win this rematch.
President Obama says he supports same-sex marriage, becoming the first sitting U.S. president to come out in favor of the issue. Host Michel Martin looks at what it means for the November elections, and for an issue that many Americans view in religious or moral terms. Martin speaks with two religion reporters: Sarah Posner of Religion Dispatches and David Brody of the Christian Broadcasting Network.
A mosaic of images taken in January 2012 shows Opportunity's vista north (left) and northeast (right), in an outcrop known as "Greeley Haven," where the rover spent its fifth Martian winter. The image released by NASA is presented in "false color," to make differences in the landscape easier to see.
With the darkest days of the Martian winter now over, NASA took its Opportunity Mars Rover for a drive this week. The rover had been stationary while its solar panels lacked enough sunlight to power its batteries.
The rover's drive Tuesday was a short one: "about 12 feet northwest and downhill," according to NASA. The agency says Opportunity has driven 21.4 miles since it landed on Mars in January of 2004.