Across the water, the lights of Brooklyn suspend like fireflies in the night air.

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Fireflies in the thick evenings.

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Now and then, the fireflies pulsed in unison, mysteriously, as if they all agreed on something we humans didn't know about.

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The team will work with luciferase, an enzyme common in fireflies as well as some glowing fungi and bacteria.

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Previous efforts to create light-emitting plants in the lab have made use of a luciferase gene derived from fireflies.

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Later, in the near-dark, we sat on the screened porch watching the fireflies.

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