The Washington, D.C., university, which is arguably the country's most prominent historically black institution of higher education, has been buffeted by a tough economy and dissent among its leadership.
Since most fish contain some amount of mercury, public health officials suggest that pregnant women limit their intake to 12 ounces a week. But fresh research suggests current recommendations may be too cautious, and that fish may not be a huge source of mercury for expecting moms. Still, some doctors remain cautious.
Instead of castigating all of Congress over the latest fiscal stalemate, President Obama is focusing his ire on Tea Party Republicans. That's energized Democrats, who are more unified than they've been in a long time. Still, that doesn't mean that they're making any headway in ending the shutdown.
Houston's Mission Control is still talking to the astronauts circling the globe in the International Space Station. But most other phone lines are down, and NASA says the shutdown could deter launches of other spacecraft and slow repair work on the Hubble Space Telescope if something goes wrong.
The director of national intelligence says that with 70 percent of spy agency staff on furlough, essential staff are being stretched thin.
The crash between a tour bus and a tractor trailer has also shut down I-40 in both directions, east of Knoxville.