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UFO: New Evidence
The question of whether or not we are alone in the universe has been a source of fascination for centuries. While some may dismiss...
LAST DAYS ON EARTH
In the expanded edition of 20/20's "Last Days on Earth," the show explores seven of the deadliest threats to humanity. From the death of...
How the Earth Was Made – Driest Place on Earth
In the age of technology, it's easy to forget that there is still much to be discovered on our own planet. How The Earth...
