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1. International Space Station is too clean – what does that tell us about how to co-exist with bugs on Earth  Daily Excelsior
2. International Space Station is too clean – what does that tell us about how to co-exist with bugs on Earth?  Deccan Herald
3. May not be enough germs on space station for astronauts to be healthy: Researchers  NBC 7 San Diego
4. Sending Microbes to Space Could Improve Astronaut Health  UC San Diego Today