A round 30 years ago, Dr Carl Sagan made an eerily prophetic prediction about the future of the US, appearing to foretell the ...

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.

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 ...

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 ...

With the occasional nod to his greatest achievements, his exploration of the cosmos is at times a challenging, daunting ...