Science + Technology – Articles, Analysis, Opinion

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Green lasers glowing within cells. Matjaž Humar and Seok Hyun Yun

We transformed living cells into tiny lasers

Using fluorescent dye, researchers figured out how to turn cells into lasers – with applications for cell tagging and tracking as well as medical diagnoses and therapies.
Blowing up the desert – and people’s minds: the first atom bomb test in 1945. US Government

Radiation in the postwar American mind: from wonder to worry

The first atom bomb test seventy years ago today marks the start of a change in Americans' thinking about radiation. On balance, our nuclear anxieties endure today.