Long ago, the Grand Canyon wasn’t a land of plunging ravines and gaping gullies, but the site of towering mountains, not ...

The Grand Canyon is known for the most incredible animals and ancient discoveries. Still today, scientists continue to make ...

The Grand Canyon may rewrite the textbooks on the Cambrian Explosion—a key turning point in Earth's history when there was a sudden boom in complex life and the emergence of all the major animal ...

Much has been learned about the geology of the Grand Canyon and about the history of life on earth since Powell and his crew made their expedition in 1869. "Scroll Down through History" displays ...

The Grand Canyon is the biggest canyon on earth ... It entered recorded history in 1540, when Spanish conquistadors under the command of Francisco Vázquez de Coronado peered into its depths.