Humans dominate Earth today, building cities, launching spacecraft and transforming the planet in ways no other known species ...

It is no secret that humans are the dominant species on Earth. And with no confirmed evidence of intelligent life elsewhere in the universe, we often assume we are also the most advanced civilization ...

Add Yahoo as a preferred source to see more of our stories on Google. The fossilized tail bones of an Ichthyosaurus, around 190 million years old and weighing 800 kilograms. - Markus Scholz/picture ...

Two scientists explored the idea that there was another civilizaton before humans, which harnessed energy and wiped itself ...