Known from their frequent film and TV appearances, the large, charismatic birds are in danger. By 2100, according to a new study, their numbers will have fallen by around 19% and will continue to decline, qualifying the species for endangered status.

The world faces a small but substantially increased risk over the next two decades of a major slowdown in the growth of global yields of corn and wheat because of warming temperatures.

Scientists have found that internal variability can make one season twice as active as another, even when large-scale hurricane-shaping elements are unchanged. The research suggests that seasonal hurricane forecasts could be improved by conveying the amount of unavoidable uncertainty in the outlook.

Researchers at NCAR and partner organizations this summer are using aircraft, ground-based sensors, computer models, and other tools to track the origins of summertime ozone, a significant health threat.