Astronomers Are Uncovering the Magnetic Soul of the Universe

Astronomers Are Uncovering the Magnetic Soul of the Universe

In a paper posted online in April and under review with Physical Review Letters, the cosmologists Karsten Jedamzik and Levon Pogosian argue that weak magnetic fields in the early universe would lead to the faster cosmic expansion rate seen today.

How to Teach Artificial Intelligence Some Common Sense

How to Teach Artificial Intelligence Some Common Sense

A neural net trained to recognize only canaries isn’t of any use in recognizing, say, birdsong or human speech.“We don’t need massive amounts of data to learn,” Marcus says.