World’s Strangest

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Martian Radiation Low Enough for Humans to Survive

One of the challenges of living beyond the Earth’s atmosphere for long periods of time is the danger of cosmic radiation. But discoveries made by the scientists running the Curiosity rover indicate that this won’t be a problem on Mars: “The astronauts can live in this environment,” Don Hassler, principal investigator on Curiosity’s Radiation Assessment Detector [...]

Torture Lab Kills Trees to Save Them

Photo: David Gilkey/NPR Droughts kill trees. That much we know. But beyond the simple concept of "trees die without water," scientists actually don’t know much about how heat and droughts affect trees. How long [...]