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Health & MedicineColonoscopy screening would avert cancer
Increased use of colonoscopy could significantly reduce the number of colon cancer deaths and wouldn't cost much more overall than other tests.
By Nathan Seppa -
TechPile-o’-polymers breaks up on command
Stacks of polymers designed to break apart in acid solution or at a certain voltage may prove useful for releasing drugs, pesticides, or other compounds where and when needed.
By Peter Weiss -
TechPores of glass skin shrink from light
Ultraviolet light can fine-tune the properties of intricately structured, porous films of glass that, among other uses, may make possible the long-sought direct extraction of oxygen and nitrogen gases from air.