Beech trees are dying, and nobody's sure why

A confounding new disease is killing beech trees in Ohio and elsewhere, and plant scientists are sounding an alarm while looking for an explanation.

Climate change broadens threat of emerald ash borer

More Canadian cities will experience damage from the emerald ash borer than previously thought. As a result of climate change and fewer days of extreme cold, the beetle may eat its way further north than originally estimated.

Renewable coal on the horizon

Coal fueled the Industrial Revolution, but it took eons to form. Now, a team of researchers at the University of Minnesota Duluth has introduced what might be called "instant coal": an energy-dense biofuel made from wood ...

Cities throw shade at rising heat

Rudy Lane is a two-lane road that curves through the leafy suburb of Windy Hills east of Louisville, Ky. Broadway is a main drag downtown where the federal and state courthouses bump up against the 1920s-era Brown Hotel.

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