Some of these small parasites have been mutating and are now resistant to many over-the-counter medications.
President Obama is again faced with a crisis over race. The protests in Ferguson, Missouri, are still boiling over, 11 days after a black teenager was shot and killed by a white police officer.
Attorney General Eric Holder will be in Ferguson today to oversee the federal investigation, but as the country’s attention stays focused on the riots, calls have grown louder for the president himself to visit the St. Louis suburb.
Here & Now’s Peter O’Dowd reports, it’s the latest step in the president’s long and difficult journey navigating racial tensions in America.