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

Was there a civilization on Earth before humanity?.. As of: April 5, 2024, 7:43 a.m By: Bjarne Kommnick CommentsPressSplit Humans are the first highly developed species on earth.

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.