How old is that fingerprint?

Forensic dramas on TV make it seem easy to determine when fingerprints were left at the scene of a crime. In reality, the oils in fingerprints degrade over time, and it's difficult to figure out their age. Now, researchers ...

Pop-up parks deliver big benefits in small spaces

Pop-up stores, restaurants, and theaters are an increasingly common sight in cities around the world, where they add to the diversity of commercial options available to city dwellers. But while the pop-up phenomenon is normally ...

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