Mars often feels finished. Mapped, scanned, labelled in broad strokes. Yet every so often, something unsettles that sense of familiarity. A shadow where none was expected. A shape that does not fit ...

In 1986, a prospecting crew in southern Romania was looking for a good place to build a geothermal power plant, when they accidentally discovered one of the oddest caves of all... Hosted by: Hank ...

CHEYENNE, Wyo. (AP) — Paleontologists digging at the bottom of a strange cave in northern Wyoming say they have uncovered a trove of animal bones from the last ice age this summer and have enough ...