Grand Canyon wildfire 'White Sage Fire' explodes overnight in Arizona as devastating black smoke blankets Midwest.

The first flight mission for planetary defense, NASA's Double Asteroid Redirection Test (DART) seeks to validate a method to ...

On his first trip to the Grand Canyon Star Party, Dave Eicher joins thousands for a week of lectures, observing, and cosmic wonder.

Immortalised in dozens of blockbuster classics since its opening in 1926, Route 66 symbolises freedom, top-down adventure and ...

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually ...

Wildfires have forced evacuations at two U.S. national parks in the West as summer monsoon storms increase lightning in the ...

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their ...

The visitor center and a wastewater treatment plant were among the 50 to 80 structures lost, the park superintendent said.

A hiker has died on the South Kaibab Trail in the Grand Canyon National Park while attempting to reach the Colorado River.

A 67-year-old Texas man died Tuesday at the Grand Canyon after abandoning an attempt to hike down to the Colorado River. He turned around and began ascending toward the rim before he was found, ...

A 67-year-old Texas man died Tuesday at the Grand Canyon after abandoning an attempt to hike down to the Colorado River. He ...

A 67-year-old man from Texas died in the Grand Canyon during an extreme heat warning, rangers said. The man was found at ...