In 2014, 20 years after the production of this episode, NASA did indeed send ants to the International Space Station to conduct behavioral experiments about collective search in microgravity. The results of this experiment were published in the journal Frontiers in Ecology and Evolution.
Countryman, S. M.; Stumpe, M. C.; Crow, S. P.; Adler, F. R.; Greene, M. J.; Vonshak, M.; Gordon, D. M. (2015). "Collective search by ants in microgravity". Frontiers in Ecology and Evolution. 3. doi:10.3389/fevo.2015.00025.
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