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How introspection and imagination make robots better.

Consciousness is an important function for us. Why not for our machines?

Emerging science is putting the lie to American meritocracy.

Where did language come from?

A patient’s departure is a critique that can help you become a better doctor.

Measuring tiny variations in the cosmic microwave background will enable major discoveries about the origin of the universe.

New technology could bring new insights into the nature of black holes, dark matter, and extrasolar planets.

To avoid garbled messages, mathematicians might translate them into geometric form.

Ramsey’s theorem predicts a surprising (and useful) consistency in the organization of graphs. Here’s a simple visual proof of how it works.

Reducing the risk of global catastrophe is good on an astronomical scale.