Science & technology | Terraforming Mars

Engineered dust could help make Mars habitable

Restoring water on Mars may be easier than you think

Computer artwork of Mars before (left) and after (right) terraformation.
Photograph: Science Photo Library

IF YOU WANT to live elsewhere in the solar system, Mars is the least-bad choice. These days, the planet is a frigid, poison-soaked desert. But as the dry river valleys that cross its surface suggest, things were balmy enough in the past to allow liquid water.

This article appeared in the Science & technology section of the print edition under the headline “Reddish-blue dot”

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