If you don't, you don't need to send mail saying you don't know. The Bass family built Biosphere II out in the desert, and experiment that failed in the sense that it didn't create a self-contained environment inhabitable by humans, but like most experiments, the failures may have been more interesting than the success would have been. A lot of data were generated on the effects of diet on health and longevity, living in hypoxic conditions, as well as data useful for the reconstruction of the experiment. Alas, there were enough people interested in gaining control of the place that the agenda seems to have been changed, and it's no longer being used for anything half as interesting as it was designed for. Perhaps one day it will be set up again.
Failures are often more interesting than successes in real science.
His instruments weren't really good enough to get the results he wanted. And gregor Mendel probably cooked his books. In both cases the theories were right. For that matter, try replicating Galileo's experiments with a pendulum, using one of the enormous compound pendulum chandeliers or sanctuary lights in the Cathedral and your own pulse as the timing mechanism. Alas, this party had nothing to do with science.