Carl Sagan had a bone-chilling prediction about America in 1995. A passage from his book, The Demon-Haunted World, is now trending online a day after Donald Trump’s presidential inauguration. TikTok ...

Opinions expressed by Forbes Contributors are their own. Dr. Lance B. Eliot is a world-renowned AI scientist and consultant. In today’s column, I am continuing my ongoing series about the impact ...

The famed astrophysicist Carl Sagan and former President Jimmy Carter shared a fundamental understanding about the fragility of our planet and the futility of our wars in a "vast and awesome universe.

American astronomer Carl Edward Sagan emphasized the importance of imagination in his work Cosmos, stating, "There is nowhere you can go without imagination." The earliest way humanity gave shape ...

This story appears in the August 2017 issue of National Geographic magazine. Carl Sagan spent his childhood immersed in Mars. The future scientist, an avid reader of Edgar Rice Burroughs’s ...