What to do?

[barda]

With the current radioactive situation in Japan, many people are now saying the radiation may reach the United States (where I live). Is there anything I should do to prepare to protect against radiation? Should I buy potassium Iodide? Is there any natural fruits or vegetables I can eat to help protect myself? Or is the love of the existence all I need? I have stocked up on food and water, but I don't know if there is anything in particular I should buy...help! I know very little about radiation and what to do to protect myself from it!