Three Minnesota state parks offer guided tours, giving participants opportunities to learn about fascinating features of the parks and the history behind them.

When a 17-year-old Minnesota boy got sick with a mysterious illness, his mom went on a quest for answers. Connor Martin, of Champlin, stays busy. "I play violin. Right now, I play softball," said ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV) light, ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. Get any of our free email newsletters — news headlines, sports, arts ...

The chemistry in Wind Cave, South Dakota, means that, under an ultraviolet (UV) light, chemicals fossilized within shine in brilliant hues of pink, blue and green.