The Hawaiian Volcano Observatory is part of the U.S. Geological Survey, the science agency of the U.S. Department of Interior. Our job is to obtain and share science-based information about the ...

Hydrothermal activity detected for the first time in the underwater volcano between Tenerife and Gran Canaria. Experts issue warning.

Scientists compare volcanic cones on Earth and Mars to explain how gas-rich magma forms scoria cones. Spacecraft observations and Earth analog sites provide evidence of similar eruptive processes.

When we think of ice on Mars, we typically think of the poles, where we can see it visibly through probes and even ground-based telescopes. But the poles are hard to access, and even more so given the ...

This chapter summarizes the principal conclusions and recommendations developed elsewhere in this report. Major conclusions are printed in italics and recommendations in bold. Basic research in the ...