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End Times

How to Defend the Planet

A six-mile-wide asteroid ended the dinosaurs, and the same could happen to us one day. But NASA is at work on ways to keep us safe.

An illustration of an asteroid in space.
An illustration of an asteroid in space. Image credit: NASA / JPL / Caltech.

Asteroids, supervolcanoes, nuclear war, climate change, engineered viruses, artificial intelligence, and even aliens — the end may be closer than you think. For




The undercurrents of the future. A publication from Medium about technology and people.

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Bryan Walsh

Bryan Walsh

Journalist, author, dad. Former TIME magazine editor and foreign correspondent. Author of END TIMES, a book about existential risk and the end of the world.

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