Moaning Cavern near Vallecito features the largest single cave chamber in California, where adventurous visitors can rappel 165 feet to the bottom. California Cavern in Mountain Ranch offers walking ...

For those bitten by the caving bug, the same company operates two other remarkable caves in the area that make for a perfect weekend cave-hopping adventure. Moaning Cavern in nearby Vallecito features ...

The US and Chinese governments have been battling it out once more over trade policies, and the big point of contention this ...

Jupiter was shaping Earth's fate before our planet even existed, carving gaps in the early solar system that kept its ...

The discovery of a new celestial object in the Earth's neighborhood has created a buzz online asking whether the planet now ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar ...

Are we alone? It's one of the most basic questions of human existence. People have been trying to answer it for millennia in ...

The practice of daylight saving time in the U.S. began over a century ago. This year's time change is now just days away.

Slowly, steadily, a small but quite lively patchwork of horror-and-gothic-themed shopfronts and cafes and restaurants and ...

Astronomers have found signs that the small icy world Chiron, orbiting between Saturn and Uranus, may be forming a new ring ...

US and Chinese officials are set to convene another round of trade negotiations in Malaysia this weekend, as the two rival powers seek to salvage fragile relations ahead of a highly anticipated ...

Tensions between the U.S. and China escalated in the weeks leading up to a possible meeting between U.S. President Donald ...