How animals of the Cambrian period experienced the Cambrian Explosion, which shaped life today and could help researchers understand life on other planets.

Scientists have uncovered an ancient fossil site deep in the Grand Canyon that could rewrite what we know about early life on ...

The Canyon's Age Sparks Fierce Scientific Debate Scientists have spent over a century arguing about when the Colorado River ...

Three people were killed and four critically injured when a helicopter touring through the Grand Canyon National Park crashed and exploded in a fireball, officials told ABC News.

Over 500 million years ago, the Cambrian Period sparked an explosion of skeletal creativity. Salterella, a peculiar fossil, ...

Newsom’s recent concessions to California’s fossil fuel industry complicate his brand as environmental champion ...

President Donald Trump nominated a former lawmaker from New Mexico on Nov. 5 to oversee the management of vast public lands ...

Hike through secret slot canyons, spot endangered California condors, visit sacred Navajo sites, and kayak a stunning 10-mile ...

Hike through secret slot canyons, spot endangered California condors, visit sacred Navajo sites, and kayak a stunning 10-mile ...

This scenic Wyoming gem is surrounded by rugged canyons, blue lakes, and wildlife, making it a perfect base for outdoor ...