It can be translucent and in some cases completely transparent. Rockhounding, a cooler name for rock collecting, is a favorite pastime for visitors and residents who live in northern Michigan.

We all know lava is pretty hot, but exactly how hot is lava? Here's what to know about the molten rock's temperatures. Lava's temperature can range between 1,300 to 2,200 degrees Fahrenheit .

The lava rock kept PGA Tour rules officials speeding around in carts with their walkie-talkies. Responding to an inquiry from Golf Digest, tour media officials said there were a combined 201 ...

Bill Whitaker was there as lava flowed from a volcano in Iceland in 2021, covering the landscape in molten rock. He returned to see what scientists have learned from the eruption.

“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.” ...