Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Volcanic eruptions frequently interfere with human affairs; impacts range from minor nuisances to major disasters. Some 50 to 65 different volcanoes typically are active in any given year, and among ...

With a hiss of steam, lava flowed from the park into the Pacific Ocean in January 2017. Similar flows of molten rock have built the Hawaiian Islands over the past 70 million years. Photograph by ...