Nana turns 90

In this excerpt from “One Hand Clapping,” Nikolay Kukushkin makes the case that neurons reveal how memory, meaning, and even consciousness emerge from the same biological roots in humans, sea slugs, and beyond.

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).

Bold megaprojects could turn dry depressions into thriving new hubs of life.

If all massive objects emit Hawking radiation, not just black holes alone, then everything is unstable, even the Universe. Can that be true?

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