From Discoveries Planet Earth Series.

This puts things into perspective how small and insignificant we are in the grand scheme of things.

America's most famous geyser Old Faithful in Yellowstone National Park erupts every 1 to 1.5 hours.

Theme from today's Live Earth celebration.

Objective: Answer all the questions before the points run out. Think Fast!

Moon's 8 phases in animation style.

A Total Lunar Eclipse on Aug. 28, 2007 Seen fro... (more) Added: August 28, 2007 A Total Lunar Eclipse on Aug. 28, 2007 Seen from Kapiolani Park in Honolulu, Hawaii. Shot thru a telescope, every 5 minutes

Realtime video with closeups of the totality from Aspendos Theatre/Turkey