A thunderstorm complex that toppled trees and knocked out power from Illinois to the Delaware coast brought to light a weather term with an obscure but intriguing history.

Colony of world's largest penguins may decline dramatically as Antarctic sea ice recedes this century, new study indicates.

A small, sophisticated instrument package developed at NCAR and dropped from aircraft has led to notable improvements in hurricane prediction. Now these devices are poised to deliver more data than ever, thanks to a new design and a remotely piloted NASA aircraft.

A multisatellite observing system that was only a gleam in researchers’ eyes in the 1990s is now a key tool for monitoring Earth’s atmosphere. An ambitious follow-up project could yield up to ten times the data gathered by the current satellites.

To help their students and faculty study the atmosphere in detail, campuses worldwide rely on Unidata, the UCAR-based program that keeps a 24/7 stream of weather and other environmental data flowing to classrooms.