From the award-winning producers of NOVA, NOVA scienceNOW brings its fast-paced, magazine-style approach to investigate what's happening on the very front lines of science. Go behind the scenes of today's most exciting science research with host Neil deGrasse Tyson, renowned astrophysicist and Director of the American Museum of Natural History's Hayden Planetarium.

This episode of NOVA scienceNOW covers:

Saving Hubble: NOVA scienceNOW covers the upcoming repair mission for the Hubble Space Telescope - an orbiting eye on the universe that has greatly advanced our knowledge of the cosmos. Host Neil deGrasse Tyson travels to the NASA Goddard Space Flight Center, where he and NOVA scienceNOW cameras are given special access to the astronauts who are training for one of the most complex missions ever attempted.

First Primates: Could one of our early ancestors have been the size of a mouse? If University of Florida paleontologist Jonathan Bloch is correct, we may have to downsize our image of what it means to be a primate--the biological order that includes humans, apes, monkeys, and comparable mammals. Go into the field with Bloch to search for our missing relatives from the shadowy period after the catastrophe that doomed the dinosaurs.

Profile--Alfredo Quinones-Hinojosa: It's been two decades since Alfredo Quinones-Hinojosa jumped the border fence separating Mexico and the U.S. and established himself as a farmworker in southern California. His goal: to earn enough to feed his family. Today he's an assistant professor of neurosurgery and oncology at Johns Hopkins University, where he is in hot pursuit of a breakthrough in the treatment of brain cancer.

Killer Microbe: There is a new enemy on the battlefields of Iraq, but it's too small to be seen. It's a bacterium, called Acinetobacter baumannii, isolated from already sick patients in hospitals overseas and in the U.S. And what's scary is that it has become resistant to most of our arsenal of antibiotics. But how? Researchers in the U.S. are "looking under the hood" of the bacterium to understand what makes it work.

Special DVD features include: materials and activities for educators; a link to the NOVA scienceNOW Web site; segment selection; closed captions; and described video for the visually impaired. On one DVD5 disc. Region coding: Region 1. Audio: Dolby stereo. Screen format: 16:9 Anamorphic.