A collection of opinionated commentaries on culture, politics and religion compiled predominantly from an American viewpoint but tempered by a global vision. My Armwood Opinion Youtube Channel @ YouTube I have a Jazz Blog @ Jazz
and a Technology Blog @ Technology. I have a Human Rights Blog @ Law
What is radiation's threat? David Brenner, director of the Center for Radiological Research at Columbia University Medical Center, talks with Rachel Maddow about different kinds of radioactive material, how they enter the body and their damaging effects.