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Get the big picture. Take a trip into Earth's ancient geologic
past and see how it all began or discover how elemental forces continue
to shape our world. Check out the featured video clips for a peek
at some of our most intriguing segments on Earth and Space; or dig
deeper into the collection by browsing the subtopic categories.
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 Fossils
Geological
Events
Glaciers
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Rocks
& Minerals
Weather
Volcanic
Activity
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Caving in Kartchner Caverns State Park
- Part 1
Produced
by KAET-Tempe
Kartchner Caverns is a unique living cave in southwest Arizona
that was originally discovered and protected by two college
students.
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Badlands Fossil Hunter
Produced
by Montana PBS
Makoshika State Park of Montana is home to strange and beautiful
rock formations, as well as a good number of dinosaur bones.
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Mister Twister
Produced
by Vermont Public Television
A Vermont entrepreneur gathers eyewitness video footage of
tornadoes and distributes the collective testament to the
power of these natural phenomena.
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Missoula Flood - Part 1
Produced
by Oregon Public Broadcasting
During the ice age, glacial ice dams across the Northwest
caused rivers to flood on a massive scale, leaving topography
that resembles a giant riverbed.
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