In a breakthrough that will help scientists unlock mysteries of the Sun and its impacts on Earth, an international team of scientists led by NCAR has created the first-ever comprehensive computer model of sunspots.

NCAR researchers are studying whether the eruption of Indonesia’s Mt. Toba supervolcano about 70,000–75,000 years ago may have cooled Earth enough to initiate an ice age and potentially alter the course of human evolution.

Bret Harper, Consultant • Harper's graduate study focused on wind climatology, but he works on a variety of questions as a consultant, including hydroelectric feasibility studies, dam inspections, and integrated resource planning.