Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget. ...

Rocks are the key to Earth history, because solids remember but liquids and gases forget. (Walter Alvarez)

Walter Alvarez Quotes Pictures

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.

Walter Alvarez Quotes: Rocks are the key to Earth history, because solids remember but liquids and gases forget.