The ISS is getting an incredible new tool: a handheld DNA sequencer. The questions scientists hope it will answer include whether life exists beyond our planet and just what is that weird fungus growing on the wall of the space station?
Proponents of the so-called “hygiene hypothesis” say that being too clean changes the bacteria that live within us, making us more susceptible to allergies, asthma and other immune-related conditions. Now, a study published in the journal Cell provides more evidence that this might be true. Learn more in this TIME news story: