The best protection filters don't need to do anything at all except take the bangs, knocks, and scratches that might otherwise wreck a very expensive lens! Simply put, they're one of the most ...

They analyzed replicative senescent fibroblasts for UV-induced pyrimidine dimer repair ... Phosphorylated histone H2AX (γ-H2AX) induction was observed mainly in the G1 phase, not the S phase, ...

A nanometer is one billionth of a meter. UV radiation has a shorter wavelength and is more energetic than visible light. Depending on its wavelength, it can get through the ozone layer and affect our ...