In a dramatic new discovery, scientists have identified over 15,000 kilometers of ancient riverbeds on Mars, revealing that ...

A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

The Independent Redistricting Commission's plan for Arizona likely results in 4 Republican, 3 Democratic and 2 "competitive" congressional districts in the state.

Ancient hunter-gatherers built monumental mounds at Kaillachuro in Peru without kings, rewriting history of "monumental ...

The discovery of more than 15,000 kilometres of ancient riverbeds on Mars suggests that the Red Planet may once have been ...

Arizona, the Grand Canyon State, offers a diverse landscape from scorching deserts to pine-clad mountains. Discover Arizona's map, geography, fascinating facts, rich history, major cities, and top ...

Steve Kerr, signing autographs prior to the 1988 Final Four, helped lead Arizona to one of the most memorable seasons in program history and the UA’s first-ever No. 1 ranking. Photos by ...

Arizona is filled with scenic locations. Some are obvious, like Sedona and Grand Canyon. Others are more surprising. Here are 10 worth photographing.

Costco regulars may want to dig up their old receipts. The wholesale and retail giant has announced a recall of over a dozen items, some of which pose potential danger to its customers. Included ...

On topographical maps, the terrain resembled elephant skin, with countless folds worn into the hills by centuries of runoff.

Arizona has no shortage of places where beauty slaps you across the face, but Wahweap Overlook delivers a full five-finger knockout that leaves you wondering if someone secretly installed a massive HD ...