Researchers have succeeded in producing a coating material that can be written on using UV light and the writing erased again using oxygen. Changes to rewritable paper could help reduce paper waste in ...
Titanium dioxide—a white pigment that reflects and scatters UV light—is a powerful sunblock. But one crystalline form of the pigment commonly used in sunscreens reacts in sunlight to produce free ...
When human cells are exposed to titanium dioxide without the presence of UV light from the sun, the risk for bacterial infection more than doubles, scientists have discovered. When human cells are ...
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