Forecasts of when a volcano is ready to erupt could be a little closer thanks to work by geologists at the University of California, Davis, and Oregon State University published online Feb. 16 in the journal Nature. "The question is, what percentage of time is the magma in an eruptible state?" said Kari Cooper, associate professor in the Department of Earth and Planetary Sciences at UC Davis and lead author on the paper. "People think about there being this big reservoir of liquid magma under a volcano, but we don't think it's in that state all the time," she said. Read more at UC Davis News.