Why does Sylva, a graduate student at Northwestern University, care so much about how gay people walk?
CNN: Step by step, researcher looks for sexuality clues
Sylva's observations focus on the physical characteristics of the individual's stride, such as the closeness of the knees.
Most recently, she has designed the Sylva Solar Food Dryer to sell to small-scale farmers who can use it to add value to their produce.
BBC: Zambian open window gave restaurant lift-off
David Sylva wants to know.
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