The American Association for the Advancement of Science is the world's largest general scientific society

“The challenges we are facing are really immense,” a keynote speaker on Monday warned.

Weak electrical discharges, called corona, can form on tree leaves during thunderstorms

Sea–surface salinity levels in the Pacific and Atlantic oceans can presage heavy rains in the Midwestern United States.

The researchers are participating in the Prediction of Rainfall Extremes Campaign in the Pacific (PRECIP), a $6 million field campaign in Taiwan and Japan funded by the National Science Foundation to improve our understanding of the processes that produce extreme precipitation.