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Stray science stories from last week to cheer up your Monday.

Food sometimes sticks to a heated surface, even if oil or a nonstick frying pan is used. Scientists have investigated the fluid properties of oil on a flat surface and their work shows convection may be to blame. Left: dry spot on nonstick Granitec pan; right: dry spot on Teflon-coated pan. Credit: Alex Fedorchenko