The Download: engineered microbes for crops, and OpenAI's culture problem

The Download: engineered microbes for crops, and OpenAI's culture problem Plus: reports of AI escaping users' control nearly doubled in a month. How engineered microbes could help feed the world's crops Fertilizer is crucial for the global food supply, but making it uses a lot of energy and produces a lot of emissions. Some companies hope microbes can help, by providing crucial nitrogen to help plants grow, potentially reducing the need for chemical fertilizer. Startup Switch Bioworks is taking a new approach: using a genetic switch that allows microbes to establish themselves and grow before shifting into nitrogen-producing mode. The company is currently trialing its product in six US states. And, although it's too early to say exactly how well the approach works in the field, its modeling suggests microbes could eventually replace about 50% of synthetic fertilizer.