Farmers across the country face a dilemma as herbicides that once killed off the weeds that compete with their crops lose effectiveness in the face of herbicide-resistant weeds.
The success of antibiotics has dramatically changed the way we think about illness and recovery since their development in the 1940s. Unfortunately, antibiotics are not as potent as they used to be. Our thinking may need to change again—both in how we treat illness, and, some experts argue, in how we raise livestock.
A long chain of evidence suggests climate change is happening. The question is what to do in the face of it.