PAHOA, Hawaii – Months-old rocks crunch beneath Deb Smith's feet as she carefully follows a barely visible path snaking across the top of the 50-foot-deep lava covering what once was her ...

Here's the problem: Lava isn't like water, snow or mud. It's liquid rock, so it's heavy, sticky and moving underground. And it's nearly 2,000 degrees. The highest-profile time authorities ...

The staff of the University of Hawaii’s art department gleefully melted hardened lava rock from Hawaii’s Big Island and poured it into buckets of seawater. “I hadn’t appreciated how much ...

“We know lava has structural integrity because we have built columns from lava rocks to support whole houses,” says Pálmadóttir, adding that “90% of Icelandic concrete is basalt.