Ray Wheeler explains a system for growing salad crops to students in the Life Support and Habitation Systems Lab at the Space Life Sciences Lab facility.

Dr. Ray Wheeler explains a system for growing salad crops in space to students in the Life Support and Habitation Systems Lab at the Space Life Sciences Lab facility.

The 26 honor students in chemistry and biology and their teachers got a chance to visit a number of high-tech labs at Kennedy Space Center as part of an effort to encourage students in the areas of science, technology, engineering and math. The tenth and eleventh grade students from Terry Parker High School in Jacksonville, Fla., visited a number of vastly different labs during their one-day tour. The group's visit to Kennedy was hosted by the Education Office as part of a nationwide effort by the National Lab Network to help introduce the nation's students to science careers. Photo credit: NASA/Jim Grossmann