POSTED: 01:30 a.m. HST, Jun 01, 2012
~~<p>Nuclear radiation bombards us every day of our lives. Some comes from natural sources and some comes from human activity.</p>
Nuclear radiation bombards us every day of our lives. Some comes from natural sources and some comes from human activity.
Natural sources include cosmic radiation from space, unstable atomic nuclei produced by interactions of cosmic radiation with atoms in the atmosphere and radioactive decay of natural nuclides in Earth's crust. Login for more...