[HIGHLIGHTS] Was there a civilization on Earth before humanity?

Was there a civilization on Earth before humanity?. As of: March 26, 2024, 9:04 a.m By: Bjarne Kommnick CommentsPressSplit Humans are the first highly developed species on earth.

Or was there a civilizations before our time? Scientists are researching this question to answer another. How long would alien life forms recognize that humanity had lived on Earth? “That's a difficult question to answers,” Gavin A. Schmidt, director of NASA's Goddard Institute for Space Studies, and Adam Frank of the University of Rochester say.