Japan is known for being tectonically active. The March 11, 2011, earthquake was a result of movement along two major plate boundaries.

Mar 15, 2011 – Alexandra Matiella Novak

In a pre-war edition of today's mayhem in Sendai, an earthquake and fire ravage Tokyo, Yokohama, and the Kanto plain in the Japan of 1923.

Mar 14, 2011 – Brian T. Bolten

The world's largest geothermal-electric development, The Geysers of Northern California, injects reclaimed wastewater to supplement nature's natural steam.

Mar 14, 2011 – Wendell Duffield

Nestled within the Klamath Mountains, the Oregon Caves and vicinity contain a wealth of geological treasures for the amateur and professional to discover.

Mar 13, 2011 – David Katski

The earthquake that hit Japan measured a powerful 8.9. Tsunamis are expected to hit all nations bordering the Pacific. Where do you find more information?

Mar 11, 2011 – Sally Anne Lewis

Japan is an archipelago which formed as a result of major tectonic forces. As a result it is subject to high levels of earthquake and volcanic activity.

Mar 11, 2011 – Jennifer Young

Which state has the highest risks for earthquakes? What is the Richter scale and what should you do if in an earthquake?

Mar 8, 2011 – Tom Raley

Discussion of properties of carbon dioxide that threaten oxygen-dependant life, and of how an increase in this gas to Earth's atmosphere may impact climate

Mar 3, 2011 – Wendell Duffield

The most important energy source on earth is oil. It takes millions of years to be produced by nature, but is used up quickly. What is the future of oil?

Feb 25, 2011 – Harvey Craft

A description of an eruption of El Chichon Volcano, Mexico, in 1982, and how that eruption solved the meaning of a puzzling oral tradition of Mayan origins.

Feb 21, 2011 – Wendell Duffield

Labradorite, often mistakenly called granite, is a beautiful and somewhat strange mineral used for many decorative purposes, including counters and bars.

Feb 20, 2011 – Jarod Rhoades

NPRA, located within Alaska's North Slope, has a complicated geologic evolution, which has also led to large amounts of oil and gas accumulation.

Feb 16, 2011 – Alexandra Matiella Novak

Continental divides are often thought of as mountain ranges. But in the upper midwest, Pleistocene glaciation created a divide in nearly flat terrain.

Feb 15, 2011 – Wendell Duffield

A phenology calendar tracks natural events like a type of Earth diary. It is a work in progress that increases your awareness of nature.

Feb 14, 2011 – Chris Dinesen Rogers

The world's best peridot comes from mountain top mines once used by the Taliban as a base in Pakistan, and from Indian Country in Arizona.

Feb 13, 2011 – D.A. Barber

The Earth is made up of multiple differentiated layers of material. The density and composition of these materials varies with depth.

Feb 9, 2011 – Alexandra Matiella Novak

Canada has major deposits of salt and the world's largest salt mine in Goderich Ontario. Canada is also the world's largest per capita consumer of salt.

Feb 8, 2011 – Laurie Chan

There is some confusion regarding pole shift and pole reversal. Geologists think that pole reversals have occurred on an average of every 300,000 years.

Feb 7, 2011 – Diane Evans

The author's personal experience of learning to work with Kilauea's active lava flows, plus a description of two colleagues who fell into such flows.

Feb 7, 2011 – Wendell Duffield

The polar icecap covers lakes buried under the ice for millions of years. Russian scientists prepare to drill to one of the largest of sub-glacial lakes.

Feb 4, 2011 – Raphaelle OBrien