Researchers remotely map crops, field by field

Crop maps help scientists and policymakers track global food supplies and estimate how they might shift with climate change and growing populations. But getting accurate maps of the types of crops that are grown from farm ...

How to avoid a 'winner's curse' for social programs

Back in the 1980s, researchers tested a job-training program called JOBSTART in 13 U.S. cities. In 12 locations, the program had a minimal benefit. But in San Jose, California, results were good: After a few years, workers ...

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