Pine rings record a sharp rise in rainfall intensity and volatility, showing modern extremes exceed patterns seen over the past 500 years.

One of North America’s richest ecosystems, sustained and shaped by Native peoples before European contact, nearly disappeared. A recovery is underway.

For months, foresters and researchers have been investigating reports of ailing pine trees in Arkansas. New diagnostic lab results help tell part of the story, but researchers are continuing to ...

One of the simplest examples of how plants adapt to ensure that their species survives is found in pine cones. Evergreen trees that produce cones are called conifers. There are more than 600 species ...