Thinking in Planetary Time ...

The Catholic Church has been undergoing a long, slow shift, playing out on the timescale of centuries: a shift to distance ...

Rick Prelinger is the founder of the Prelinger Archives in San Francisco, whose moving image holdings may be found online at ...

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Monica L. Smith is an archaeologist whose principal research interests are the human interaction with material culture, urbanism as a long-term human phenomenon, and the development of social ...

Dr. Priyamvada Natarajan is a Professor in the Departments of Astronomy and Physics at Yale University. Her latest book is Mapping the Heavens: The Radical Scientific Ideas That Reveal the Cosmos. No ...

John Brockman is founder and publisher of the online salon Edge.org, a website devoted to discussions of cutting-edge science by many of the world's foremost thinkers, the leaders of what he has ...