Subway stations near river tunnels have worst air quality

Subway riders waiting in stations near tunnels that run below the city's rivers are exposed to higher levels of hazardous pollutants than are found in other stations. The "river-tunnel effect," as researchers call it, may ...

Crop waste cattle feed solution 'averts toxic fires'

Researchers in India have found a way to enhance the nutritional value of crop residue so that it can be fed to cattle, deterring farmers from setting it on fire, a practice that destroys soil nutrients and causes severe ...

Prehistoric fish may be poised for a comeback

Researchers studying lake sturgeon in Northwest Georgia's Coosa River have found evidence that the fish may be reproducing for the first time since they were wiped out in the 1970s.

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