Christopher Joyce Christopher Joyce is a correspondent on the science desk at NPR. His stories can be heard on all of NPR's news programs, including NPR's Morning Edition, All Things Considered, and Weekend Edition.

When Traffic Lights Make Us Stop and Think

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The Strange Drumbeat of Mount St. Helens

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Engineers Put Wood House to the Quake Test

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Scientists Push Registry for Nuclear Materials

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Fish Stocks at Risk of Collapse, Study Says

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Huge 'Terror Bird' Fossil Discovered in Patagonia

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Scientists Make Progress on Invisibility Device

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Environmentalists Rethink Stance on Nuclear Power

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Ancient Fossil Child Discovered in Ethiopia

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Earliest New World Writing Discovered

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Neanderthals Found to Live in More Recent Past

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Gulf Oil Find Promising, Problematic

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Arctic Freshwater Pouring Into Atlantic, Scientists Say

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