Scientists have presented the "first compelling evidence for the existence of lava tubes on Venus." And they're way bigger ...

Lava tubes are familiar on Earth. They form when the surface of a lava flow hardens while molten rock continues to drain ...

Venus is often called Earth's "sister planet" because of their similarities in size, mass, and composition. Both are rocky ...

A recent study offers proof of feasibility for using cosmic radiation detectors to discover underground spaces. The detectors ...

Italy and Austria are on the verge of completing the longest underground rail tunnel in the world. The €10.5 billion ($12.3 ...

It has been suggested that lava tubes - underground tunnels carved out by molten rock - might be on Venus, and now we have ...

For most organisms on Earth, rocks are objects, not food. But for one oddball microbe, desert limestone seems to have been on the menu. Whether or not this mysterious form of life still exists or went ...

The MTA is considering a system that would use the Earth’s subsurface to transfer heat out of subway stations and store it elsewhere.

The Earth Titanium Project, all 37.5 acres of it, is poised for a comeback. The push is being driven by the buyers association (UTCA), real estate veterans Splendor Group, no-nonsense support from ...

Researchers confirm with radar and laser the existence of hidden passages beneath Milan's Sforza Castle, anticipated by Leonardo's sketches.

A drill echoes through narrow tunnels deep within the mountain where miner Hugo Flores bores into rock in search of one of ...

A drill echoes through narrow tunnels deep within the mountain where miner Hugo Flores bores into rock in search of one of ...