Could a Crewed Mission Contaminate Mars?

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Physicist Robert Park raised the unnerving possibility in this interesting Slate piece contrasting robotic and manned space exploration. “If... Read more

Climate Change Deniers Not as Prolific as Cold Fusion Proponents

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F.F. I thought I'd let Higgs the cat deal with some recent claims from climate change deniers and cold fusion believers. Here’s a comment... Read more

Separating the Skeptics from the Denialists

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Skepticism is essential to science, and to a strong public understanding of science. But when does healthy skepticism veer into irrational... Read more

Can You Find the Higgs?

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A reader sent this very clever story about a Higgs searching contest sponsored by Symmetry Breaking, a publication put out by two physics labs... Read more

Evolutionary Medicine: Research Shows how Vaccines Might Prompt Evolution of More Aggressive Parasites

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Here’s this week’s evolution column. It also ran in Monday’s issue of the Philadelphia Inquirer: When Pennsylvania State... Read more

Images from Mars, Letter from a Parallel Universe

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The first images from the Mars Science Laboratory have arrived. Here’s what NASA says about the successful landing: PASADENA, Calif... Read more

Mars Mission Critics Misunderstand Chemistry

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I’m finally back from a series of vacations and ready to pick up regular blogging again. And there’s going to be plenty of good... Read more

New Mission Tackles Mystery of Martian Past

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If we found life on another planet, the discovery would go a long way toward answering the deepest open questions in biology: How did life... Read more