Fear The Prius? A Toyota Prius hybrid model car waits for customers at a Toyota dealer in Hollywood, Calif., on March 10. Concerns about the cars suddenly accelerating dogged the company earlier this year. Mark Ralston/AFP/Getty Images hide caption

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One of the goals of the ATLAS detector at the Large Hadron Collider is to search for the Higgs boson, a particle that scientists say gives everything in the universe mass. For scale, note the workers toward the bottom of the image. Maximilien Brice/CERN hide caption

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A Lens On History: Advances in DNA technology have given scientists a new tool with which to study ancient human origins. "I think ancient DNA becomes very powerful" now, says one researcher, "because it gives you a direct look into the past." Here, a photographer shoots a reconstruction of a Neanderthal man at a museum in Germany. Sebastian Willnow/AFP/Getty Images hide caption

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The hallucinogenic mushroom Amanita muscaria. Harvard biologist Donald Pfister claims that both people and reindeer ate the mushrooms. "Reindeers flying -- are they flying, or are your senses telling you they're flying because you're hallucinating?" he says. John Tann/flickr hide caption

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Solar panels like these in England turn energy from the sun into electricity. But researchers are looking to capture the sun's energy to make liquid fuels for cars and trucks, by combining carbon dioxide, water and the chemical element cerium. Matt Cardy/Getty Images hide caption

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