Major Geological Events Seem to Follow a Rhythmic Pattern of 27.5 Million Years, Researchers Call It Earth’s ‘Pulse' Dozens of major geological events over the past 260 million years, from sea level ...

Billions of years ago, the molecular building blocks of life emerged from a complex web of chemical and geological processes.

The northern part of Sierra Nevada still retains its dense layer, making it a snapshot of an earlier stage in this geological cycle. This discovery provides a rare glimpse into the mechanisms ...

A century ago the valleys of the Southwest were green; now they are brown and cut by gullies. Man is blamed for the change, but he has only added a factor to the geologic cycle that causes it ...