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Could brain-inspired computers run on the same amount of power as a human brain?

The human brain uses about the same amount of wattage as a lightbulb

How Trump Has Disrupted National Parks

MAXINE JOSELOW

Maintenance projects have been put off around the country and resources diverted to the president’s favored projects in Washington.

Creating a Kill Switch to Shut Down a Rogue A.I. Is Harder Than It Sounds

DYLAN FREEDMAN AND DUSTIN VOLZ

A bipartisan group in Congress and Gov. Gavin Newsom of California have floated ideas for building a mechanism that would instantly power down an A.I. system. Only no one really knows how.

Why human language may be intertwined with fire

Understanding how human language evolved is one of the hardest problems in science to unpick

Video Shows a San Diego Dog Seeming to Greet an Intruder. Why Didn’t He Bark?

MICHAEL LEVENSON

Dog behavior experts offered a variety of explanations for why Nash the golden retriever wagged his tail and carried a toy near a man who broke into his owner’s home.

Two Centuries On, Smithsonian Connects Jefferson’s Hair to Hemings’s Children

JENNIFER SCHUESSLER

A new book describes how cutting-edge genomics techniques yielded “extraordinary proof” that Thomas Jefferson fathered children with Sally Hemings.

Archaeologists Decode Rules of an Ancient Roman Board Game

FRANZ LIDZ

They scanned the pattern of microscopic imperfections on an ancient limestone slab, and used A.I. to figure out how a game might have been played.