From Hawaii’s flowing lava to Alaska’s smoldering peaks, these U.S. states are home to the most active volcanoes, shaping ...

Scientists have studied Yellowstone National Park's magmatic system for years, but a new view of the magma chamber shows the ...

Missteps, Equipment Problems and a Common but Risky Practice Led to a Fatal Crash New details revealed by The Times show the complex failures on Jan. 29 before an Army helicopter crashed into a je ...