Protection from nuclear radiation

We are looking for someone to answer number of questions on protecting home and family from nuclear radiation. Our questions would include, but not be limited to: - how distant nuclear radiation works; why is it dangerous - how the nuclear disaster in Japan can affect the US and the global weather/radiation levels generally - ways to detect, measure and monitor radiation - quick ways to protect your family and house from a distance source of radiation - natural ways to protect from short, medium and long term radiation - potential risks if not taking protective measures - how radiation affects human bodies (short, medium and long term) - how radiation affects the environment (short, medium and long term) - common misconceptions; facts and myths about nuclear radiation