'Ribbit Radio' shows frog population estimates are likely flawed

Scientists track amphibian populations because these animals are sensitive to changes in their environment and can serve as "canaries in the coal mine" to give researchers early warnings about pollution or other ecological problems. But new research shows that data from the largest amphibian monitoring program in the United States may have flaws that, if uncorrected, could result in overestimates of frog populations.

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