The red cedar trees of West Virginia reveal just how effective U.S. clean air laws have been. David Biello reports

Trees Write Air Pollution Record In Wood

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Science

National Park Service researchers recorded ambient sound from all over the country to find out where there’s still stillness. David Biello reports

New Map Knows Noise

Life thrives even deep inside Earth and scientists are beginning to suspect extensive connections among those underground environments. David Biello reports

Oil-Eating Microbes Have Worldwide Underground Connections

The long-term winter warming of Russia’s far north has gotten a boost from industrialization. David Biello reports

Siberian Winters See Temp Uptick

The biggest single source of global warming pollution actually started to shrink in 2014. David Biello reports

Dig This: China Cuts Coal Production

The value of recycling depends on the material in question and whether all hidden costs and benefits go into the analysis. David Biello reports

Trees Write Air Pollution Record In Wood

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