Live Science on MSN
What if Christopher Columbus had never reached the Americas?
Columbus wasn't the first European to reach the Western Hemisphere; the Vikings had landed in Newfoundland about 500 years ...
Amazon S3 on MSN
What if another advanced civilization lived before us
The bold question-askers at What If consider the possibility that we are not the first advanced civilization on Earth.
What if we aren't the first technological civilization on Earth? We’re almost certainly the first technological civilization on Earth. But what if we’re not? We are. Although how sure are we, really?
New research suggests that technological civilizations in the Milky Way are extremely rare, with the closest potentially ...
No one knows why the Hohokam Indians vanished. They had carved hundreds of miles of canals in the Sonoran Desert with stone tools and channeled the waters of the Salt and Gila Rivers to irrigate their ...
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