In terrain that pushes your limits, National Geographic photographer Jody MacDonald captures what it means to truly show ...

Analysis of the remains of pumice slabs propelled out of the mouths of ancient volcanoes some 3.46 billion years ago and preserved in Western Australia show these little rock islands would have ...

The rocks — a raft of pumice estimated to be as large as 200 football fields — transformed the ocean into an opaque, undulating crust. Scientists say the raft resulted from an underwater ...

A “raft” of floating pumice rock the size of Manhattan is drifting towards Australia, bringing along with it new marine life that could help with the recovery of the Great Barrier Reef’s ...

The rocks, some the size of marbles and others as big as basketballs, bumped against their boat and clogged their rudders. “It was quite eerie, actually,” Larissa Hoult told CNN . “The whole ...

Pumice, a lightweight volcanic rock filled with tiny gas bubbles, has recently been found washing up on Texas beaches. This natural phenomenon, while not common, occasionally occurs and piques the ...

Floating volcanic pumice rocks blanket the shore line of an Argentine lake near the Puyehue-Cordón Caulle volcano. (Image credit: J. Elser) Born from rock ...

Pumice stones pack a big punch when it comes to exfoliation and getting smooth skin, specifically feet."Thanks to their abrasive properties, these volcanic rocks (which are created when lava and ...

What is a pumice stone? According to Dr. Splichal, a pumice stone is an exfoliation tool commonly used for dry skin and calluses on the feet. “It is made of natural lava rock that is porous and ...

A pumice stone is a rock made of hardened lava. The same type of pumice used for your oven-cleaning stone is the same as that ...

A “raft” of floating pumice rock the size of Manhattan is drifting towards Australia, bringing along with it new marine life that could help with the recovery of the Great Barrier Reef’s ...

Pumice, a lightweight volcanic rock filled with tiny gas bubbles, has recently been found washing up on Texas beaches. This natural phenomenon, while not common, occasionally occurs and piques the ...