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Animals

Scientists have now recorded brain waves from freely moving octopuses

The data reveal some unexpected patterns, though it’s too early to know how octopus brains control the animals’ behavior, a new study finds.

Math

Here’s a peek into the mathematics of black holes

The universe tells us slowly rotating black holes are stable. A nearly 1,000-page proof confirms it.

Genetics

DNA from Beethoven’s hair hints at what killed the composer

Many historians suspect Beethoven died from liver failure. A new analysis shows he had a heightened genetic risk for liver disease, researchers say.

Space

‘Off-Earth’ asks how to build a better future in space

As humans prepare to live in space someday, ethics should be as much of guide as science and technology, an astrophysicist argues in a new book.