It’s not easy for computers to tell humans from other computers posing as humans. Andrii Shelenkov/Stock via Getty Images

CAPTCHAs: The struggle to tell real humans from fake

CAPTCHAs are a key part of the arms race between AI deceivers and AI deception detectors. A computer scientist explains how they work.
Neural networks try to simulate the brain by processing data through layers of artificial neurons. MF3d / E+ via Getty Images

What is a neural network? A computer scientist explains

Neural networks today do everything from cameras to translations. A professor of computer science provides a basic explanation of how neural networks work.

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