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 …
How do we know right from wrong? For centuries, religion and philosophy tried to provide answers. Now psychology, neuroscience, and evolutionary biology are weighing in. Part One of my documentary, …
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, …
One of my images from Easter Island, showing star trails above a row of "moai" statues, has been selected for the cover of the 2013 Observer's Handbook, published by the …
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 …
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 …
Time travel has been a favorite subject for science fiction writers, but what does science have to say about it? In Part One of my two-part video, I look at …
