Volcanos are releasing ash and smoke into the atmosphere on three continents. That might be making you think back to your elementary school science class when you probably studied volcanoes and lava.

Hawaii’s Kilauea volcano has been shooting lava from its summit crater about once a week since late last year, delighting residents, visitors and online viewers alike with a firehose of molten rock.

HONOLULU — Hawaii's Kilauea volcano resumed erupting Friday by shooting an arc of lava 100 feet (30 meters) into the air and across a section of its summit crater floor. It was Kilauea's 31st display ...