The bacteria we carry in our bodies is closely connected to our health. It’s been shown that the outdoor environment is able to sustain a wide range of different microbes, and as urbanization rises, people are exposed to less of these microbes. As the diversity of the microbial community in our body increases, health outcomes improve, and lower levels of diversity are associated with disease. Researchers have now found that children that grow up on a farm that houses animals have half the risk of getting asthma as children that aren’t around farms; the more a kid’s home environment resembles a farmhouse, the lower their chances of developing asthma. The findings have been reported in Nature Medicine.