J. Storrs Hall is the author of Nanofuture: What’s Next for Nanotechnology, a book covering the physical principles of engineering at the atomic scale, possible applications of nanomachines, and their potential alteration of human society. More recently he published Beyond AI: Creating the Conscience of the Machine, a review of the history of AI, discussing some of the major roadblocks that the field has recently overcome, and predicting the probable achievements in the near future. At October’s Global Catastrophic Risks conference in Mountain View he gave a presentation entitled “The Weather Machine” on the potential for nano-enabled “Climate Control for the Earth”