Gee, your hair smells terrific! This is Sandra Tsing Loh with the Loh Down on Science. When we smell, odor molecules dock into special proteins that alert our brain. Mmmm…bacon! Biologists call these proteins olfactory receptors, or O-Rs, and they do more than just smell! All kinds of cells use
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ANOTHER gray hair? Oh no! Break out the Lady Grecian Formula! This is Sandra Tsing Loh with the Loh Down on Science, on going gray! Oh, those silvery locks, at too young an age – is stress to blame? Melissa Harris from the University of Alabama, Birmingham studied how stress
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The latest designer colors could be coming to you soon courtesy of… tarantula hair? This is Sandra Tsing Loh with the Loh Down on Science. Researchers at the University of Akron are interested in spider hair. Specifically, the hairs of the Metallic Blue Ornamental tarantula. This giant spider gets its
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Was the first Grecian formula actually Roman? This is Sandra Tsing Loh with the Loh Down on Science. When it came to coloring hair, Ancient Rome was startlingly advanced. Its recipe for hair dye combines lead sulphide and lime. These create nanocrystals, which grow not just inside hair strands but
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Got thinning hair? Now we know why! This is Sandra Tsing Loh with the Loh Down on Science. All types of mammals experience hair thinning as they age. Ugh. In both sexes, it’s thought to be caused by shrinking hair follicles. But stem-cell biologists in Japan weren’t content with shrinkage
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Shall we talk dirty . . . about animal hair? This is Sandra Tsing Loh with the Loh Down on Science. Meet Guillermo Amador and David Hu, of Georgia Tech. They studied twenty-seven different mammals and insects to see how each maintains a suave appearance. First, the duo calculated the
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