Our food and our health are deeply connected. American healthcare spending has ballooned to $3.5tn a year, and yet we are sicker than most other developed countries. Meanwhile, our food system contains thousands of chemicals that have not been proven safe and many that are banned in other countries. Instead of potentially hazardous substances being banned from our food, as they are in, say, Europe, chemicals of concern are typically considered innocent until proven guilty. As a result, we are the guinea pigs in our own experiment. For decades weve operated on the principle that if we can selectively kill off the unwanted parts of the natural world, we can control our futures. Farmers operate that way, but also homeowners, highway crews and landscapers. We spread herbicides, fungicides, pesticides, insecticides, fertilizers, antibiotics, hormones and various other toxins which kill everything around. Even good things. Were becoming aware of the loss of what we can see: bees, butterflies, the diverse plant life of our ecosystems. We also need to worry about the invisible microbiome and fungi in the soil that nurture life above, store carbon and absorb water. By trying to control crops with herbicides, antibiotics and pesticides, weve actually bred bugs, weeds and diseases that are resistant to our control. And our chemical onslaught will have long-term effects. Our fertilizers and pesticides leach into groundwater and streams, head out to sea and create dead zones. They also leach into our drinking water.