Caleb Scharf

Caleb Scharf is Director of Astrobiology at Columbia University in New York where he teaches and researches the questions surrounding the puzzle of life in the universe. His books include Gravity's Engines, The Copernicus Complex, The Zoomable Universe, and (coming in June 2021) The Ascent of Information. He is also author of more than 120 scientific papers, over 500 popular science articles, and a frequent consultant and speaker for TV and live audiences. Check out www.calebscharf.com