Everyday Geology

Mars made its closest approach to Earth in over 60,000 years last week. Why does Mars capture the attention of scientists and other people so much?

A review of the book by Simon Winchester.

The theory of seafloor spreading required many pieces of evidence to convince a highly skeptical audience. In the end Harry Hess and others found four primary keys that helped shape the theory.

A revolution spread through the science of geology in the 1960’s and culminated in the theory of plate tectonics. The theory was supported by key research conducted in and under the world’s oceans that led to the idea of seafloor spreading.

Sampling and analysis of rocks for their magnetic properties is a complicated and tedious process. The results though, have helped to revolutionize the science of geology.

Plate Tectonic theory revolutionized the science of geology. The study of magnetism in rocks was one of the keys that led to this grand unifying theory of geology.

My review of the new book on the controversial Snowball Earth theory written by Gabrielle Walker.

Was the Earth covered in a globe-spanning ice age? Some researchers say the evidence suggests no, and argue for a less dramatic “Slushball Earth” theory.

Imagine the Earth gripped in a world-spanning ice age lasting millions of years? Science fiction? Maybe not. Part 2 of our look at the evidence for a "Snowball Earth".

Imagine the Earth gripped in a world-spanning ice age lasting millions of years? Science fiction? Maybe not. A look at the evidence for a "Snowball Earth".