In September, a team of scientists crawled around the summit of seven volcanoes in the Aleutian Islands. They updated seismic sensors, replaced 8,000 pounds of batteries and visited one summit that geologists hadn't been to since the 1940s. They also took lots of samples.
University of New Mexico Professor Tobias Fischer landed on active volcanoes in the Aleutians to capture gases. Fischer says the samples will help tell the story of deep earth systems and how they are connected. He says landing on Kiska volcano was a first ever event for geologists.
