Physics books -- Neil Turok's The Universe Within is the latest -- sell like hot cakes, even though we struggle to understand their content. Are we hoping to find more than just quarks and quasars between their covers? I look at the allure of physics in the current issue of The Walrus.

Read the article via The Walrus's website.

Could the Internet become conscious? In my first article for Slate / FutureTense, I speak with Christof Koch, Robert J. Sawyer, Daniel Dennett, and Sean Carroll about what, if anything, the Internet may have on its mind…

This summer, a computer program almost passed the "Turing test." But are thinking machines really on the horizon? In this feature article in the British newspaper The Telegraph, I explore the challenges of artificial intelligence.

Though not ruled out by general relativity, travelling into the past would seem to violate common-sense notions of causality and free will -- and then there's the Grandfather Paradox... Part Two of this video features Einstein, relativity, wormholes, and more! (Part One is here.)