Climate change may bring more tainted shellfish to northern seas

Study finds rise in dangerous bacteria could make swimming more hazardous, too.

Does living near a fracking site make asthma worse?

Study found association, but not cause-and-effect.

Coal burning pollution causes most damage

Research proves that it's five times more dangerous for your heart than same-sized particles from other sources.

4 in 10 Americans breathe unhealthy air

Some cities showed improvements in air quality, while others had their worst record ever.

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