In the debate over natural gas drilling, the companies are often the ones accused of twisting the facts. But scientists say opponents sometimes mislead the public, too.
Critics of fracking often raise alarms about groundwater pollution, air pollution and cancer risks, and there are still many uncertainties. But some of the claims have little - or nothing - to back them.
For example, researchers told The Associated Press that reports of breast cancer rates rising in a region with heavy gas drilling are false.
Fears that natural radioactivity in drilling waste could contaminate drinking water aren't being confirmed by monitoring, either.
And concerns about air pollution from the industry often don't acknowledge that natural gas is a far cleaner burning fuel than coal.
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