Ever heard of the phrase, “Leave No Trace”?   It’s an accepted set of seven principles—a mantra in national parks and other ...

Centuries of eruptions on the Big Island have created hidden networks of passages beneath volcanoes. In December 2016 a large lava delta formed by Kilauea volcano sank into the sea, exposing the ...

The eruption restarted at midday when when molten rock began pouring out of a vent in Kilauea's summit caldera, the Hawaiian ...