Loki, a volcano on one of Jupiter's moons, could erupt this month
(CNN) - Loki, named for the Norse god of mischief, is about to unleash an eruption on Jupiter's moon Io, according to astronomers. And Loki is the most powerful volcano on Io. Rathbun presented a poster about predicting Loki's eruptions this week at the European Planetary Science Congress - Division for Planetary Sciences Joint Meeting 2019 in Geneva. Volcanoes are usually hard to predict because a variety of factors can lead to eruptions, Rathbun noted. "Loki is named after a trickster god, and the volcano has not been known to behave itself," Rathbun said.
Service dog's summit of Mount Rainier believed to be first on record
Loki joins owner Elizabeth Briggs, McKenzie Johnson and Mel Olson at the top of Mount Rainier, making Loki the first medical service dog to complete the feat. (CNN) - A service dog is believed to be the first to reach the summit of Washington's Mount Rainier. This was Johnson's seventh Rainier summit. "Prior to Rainier, Loki had completed 80 '14-er' summits, which often included more technical scrambles, extreme exposure, and even roped ascents." Park rangers told the hikers there was no previously recorded Rainier summit made by a service dog on file.