New test measures corn nitrogen needs with greater accuracy

The soil fertility tests farmers have used for decades to measure nitrogen levels don't account for the vast majority of the nitrogen in soils, so Iowa State University scientists helped develop a new test that yields more ...

It's a crime—but for meth cooks, it's also a job

The motivation to start cooking meth is often driven by addiction, but a new study takes a closer look at the reasons cooks engage in this criminal behavior and come to see it as a job.

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