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Contributor to Wired, Vanity Fair, Business Insider, The Guardian, HuffPost, and The Washington Post.
Internet entrepreneur, philanthropist, and programmer. Co-founder and former CEO of Twitter, Inc., co-founder, principal executive officer, and chairperson of Block, Inc. Also a co-founder of Bluesky, PBLLC.
Astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, science communicator, author, and professor. Known for research on the possibility of extraterrestrial life, assembly of the Pioneer plaque and the Voyager Golden Record, and advocating for the greenhouse effect hypothesis on Venus.
American entrepreneur and investor. Co-founder of Counsyl and former CTO of Coinbase. Former general partner at Andreessen Horowitz.
I am a neurogeneticist interested in the genetics of brain wiring and its contribution to variation in human faculties. Author of INNATE (2018). http://kjmitchell.com