Best Way to Make Mars Habitable: Inject Greenhouse Gas

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The best way to make Mars habitable would be to inject synthetic greenhouse gases into its atmosphere, researchers said Thursday.

The stuff could be shipped to Mars or manufactured there.

Scientists and science-fiction authors have long pondered terraforming Mars, melting the vast stores of ice in its polar caps to create an environment suitable for humans. The topic is highly controversial.

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SPACE.com -- Best Way to Make Mars Habitable: Inject Greenhouse Gas