Emily Manor-Chapman, a NASA engineer on the 'InSight' lander, explains what the new mission to Mars hopes to accomplish.
For full interview, [click here](https://cheddar.com/videos/nasa-prepares-for-trip-to-mars).
U.S. health regulators are warning consumers not to use more than two dozen varieties of over-the-counter eyedrops because of the risk of infections that could lead to blindness.