ST. LOUIS — For 20 years, Pablo Sobron sought a better way to learn exactly what was in the soil, rock or any other substance on Mars. Instead of sampling and laboratory analysis — the old way of soil testing — scientists began to use lasers and sensors to get high precision data quickly. Eventually, […]

Rainfall across parts of the Midwest last month may have been helpful, but it doesn’t appear to be enough to alleviate the extended dryness affecting ag.