However, after being sick for more than a week, Plumb was diagnosed with HUS and sent to Portland for treatment in December.
When Plumb returned home, she wasn't able to do much for a couple of weeks.
Katie could have just sat on the couch, and she would probably still be there if she hadn't gotten on the exercise bike," Teresa Plumb said.
Viking scientists had suggested that superoxides trapped on the sample might have released the oxygen, but Plumb says "superoxides are not stable in the carbon dioxide atmosphere of Mars.
A third Viking biology instrument, designed to see whether labeled carbon dioxide might be metabolized by hypothetical Martian microorganisms, failed to show results that changed consistently with shifts in heat and humidity, Plumb says, noting another U.
The college nominated David for the Plumb
Center award for 'outstanding hard work and contribution' during his plumbing training.