The striking Kawah Ijen volcano in Indonesia is known for emitting what appears to be blue lava as soon as the sun sets.

Volcanoes are nature’s dramatic expressions of Earth's inner turmoil, shaping landscapes and influencing climates. Some countries, particularly those along the Pacific Ring of Fire , experience ...

Naples was once again hit by a series of earthquakes, the strongest reaching a magnitude of 3.9. The National Institute of ...

From Arizona's canyons to Utah's buttes and beyond, our national parks columnist shares the most adventurous Southwest ...

You can play the daily Jumble, the Jumble in Color, and its several variations on the Chicago Tribune website. Players can also print them and play on paper if they miss doing newspaper puzzles ...