Sandy Hausman

Heading into national swimming championships, the University of Virginia relies on a mathematician, cameras and sensors to help each swimmer perform their best.

Over the past decade, U.S. coal production has fallen by half as utilities switched to cheaper natural gas or renewable energy. But this year, demand is up for a different kind of coal.

The city of Charlottesville, Va., has taken down statues of Robert E. Lee and Stonewall Jackson. It was almost four years ago that demonstrations over plans to remove the statue of Lee turned deadly.

Michigan is home to some of the deepest mine shafts in the world. Most of the mines were abandoned decades ago, but they're finding a new and valuable use -- as habitat for bats. Sandy Hausman reports that environmentalists want to make sure the mines stay open for the bats, but closed to people.

Chagas disease, a potentially fatal parasitic infection, has recently emerged in the United States, striking tens of thousands. Spread by insects, the disease has plagued Latin America for decades. Reporter Sandy Hausman traveled to Honduras to see what's being done about it.