Using the iPod Touch in the classroom

In this excerpt from “Playful,” Cas Holman surveys the research that brought the neuroscience of play into the mainstream.

In “Warhead,” neuroscientist and national security adviser Nicholas Wright explains how the brain navigates warfare and why it is our ultimate weapon (and instrument for peace).

The surface and atmosphere is colored by ferric oxides. Beneath a very thin layer, mere millimeters deep in places, it’s not red anymore.

Many, from neuroscientists to philosophers to anesthesiologists, have claimed to understand consciousness. Do physicists? Does anyone?

You no longer need an army of followers to stand out as a writer — “one great piece is all it takes,” says Perell.