Then and now

HISTORY
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Shell was one of the first Canadian oil companies to expand beyond fuels to commodity chemicals like the methyl ethyl ketone trumpeted in this ad from the June 1949 issue...

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Fireflies inspire LED coating

MATERIALS
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The jagged pattern of scales on the abdomen of a firefly has inspired researchers to create a new coating for light emitting diodes (LEDs) that extracts 55 per cent more light than noncoated LEDs. Researchers in Belgium examined fireflies and noted scales with a periodically repeating...

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