The concepts of environmental sustainability that broke into public awareness in the 1970s took on new overtones two decades later. In its first report, released in 1990, the Intergovernmental Panel on Climate Change (IPCC) made it clear that ever-increasing amounts of human-produced greenhouse gases posed a real risk to a sustainable future.

Atmospheric research made enormous gains in the 1990s through the growth of high-speed data exchange facilitated by the Internet. At the same time, another byproduct of government research—the Global Positioning System—was bringing its own benefits to the field.

As a child on a Navajo reservation in Arizona, Carl Etsitty was both profoundly respectful of nature, declaring to Mother Earth that “I will forever be a steward of the land.” His reverence for the environment was paired with intense curiosity, but those attitudes clashed in the early 1990s when Etsitty went to college.

New branches of NCAR research sometimes emerge through the advent of new technology, a change in national priorities, or a disastrous weather event. Other research topics have threaded their way through the center’s entire half-century history.

Scientists in the UCAR community found themselves on the front lines of the cyber revolution that stormed the world in the 1990s. Many UCAR universities were early adopters of the World Wide Web, a technology well suited to a science that thrives on distributed data and collaboration.