Americans face the risk of a 70 percent increase in unhealthy summertime ozone events by 2050 because of factors related to climate change.

Climate change will reduce water availability during dry seasons and increase it during wet seasons around the globe, new research suggests. It also finds there will be large regional variations in water-related impacts.

UCAR and the U.N. Foundation have assembled a network of experts who can discuss climate change in communities across the country.

In recent years, spring snow has vanished even more quickly than computer models and climate scientists had expected, posing a research challenge and a potentially serious risk for water supplies.

Why seasonal forecasting can’t tell us with certainty what to expect this summer—and why we might soon have a stronger sense of what late 2014 and early 2015 are likely to bring to large parts of the globe.