CBS News' Dr. Mallika Marshall salutes Dr. Mae Carol Jemison, the first African American woman to launch into orbit who now works to help ...

CBS News' Dr. Mallika Marshall salutes acclaimed physicist and astronaut Ronald McNair.

CBS News' Dr. Mallika Marshall salutes Dr. Mark Dean who helped make possible an essential machine -- the personal computer.

CBS News' Dr. Mallika Marshall salutes inventor Garrett Morgan, whose inventions range from traffic signals to a gas mask that helps ...