Dr. Roseanne Chambers

The Navajo Sandstone is an iconic symbol of the American Southwest, renowned for striking rich red to creamy white colors and for sweeping expanses of cross-beds, the remains of ancient sand dunes.

Two deadly earthquakes rocked northwestern Venezuela on June 24, 2026.

Spectacular volcanoes form the Azores islands, which rise out of the Atlantic Ocean hundreds of miles from neighboring continents.

This post was originally published on the Volcano Café website in December 2025 (https://www.volcanocafe.org/) Along the western edge of South America, the Andes Mountains encompass one of the largest concentrations of volcanoes on Earth.

Metals found in the United States—from aluminum to zirconium—occur naturally in sufficient supply to meet the nation’s industrial needs.

The Three Magi—also known as the Three Kings or Wise Men–and their gifts of gold, frankincense, and myrrh for the baby Jesus, appear in many Christmas tales and nativity scenes.

On July 30, 2025, a powerful M 8.8 earthquake occurred off the eastern coast of the Kamchatka Peninsula in far eastern Russia.

Diamond formation and the rock type kimberlite have existed in vague detail in my geological knowledge since my long-ago undergraduate geology classes.

In the arid climate of North Africa, the archaeological wonders of ancient Egypt would not exist without the Nile River.

Precious water supplies are diminishing in many parts of the world because of climate changes of decreased precipitation and increased temperatures.