Humans Fear Radiation

Baggy: Dr. Zeebot, why are humans so afraid of radiation?

Dr. Zeebot: Well, Baggy, as we have discussed, humans aren't that bright, in general.

Baggy: That is right, you call them semi-intelligent.

Dr. Zeebot: Correct.  They tend not to think things through, preferring to react emotionally.

Baggy: So, how does this apply to radiation and why humans are afraid of it?

Dr. Zeebot: Well, humans evolved over long periods of time in the past.

Cooker: But, they didn't evolve all at once.

Dr. Zeebot: No, they didn't.  But the average radiation that they received from the Earth
while they were evolving was much greater than what they receive now.

Cooker: So, you are pointing out that humans were designed to receive more radiation
than they are getting at this point in time.

Dr. Zeebot: Precisely.

Baggy: So, what can humans do about this?

Dr. Zeebot: One thing that they can do is to move to higher ground.  Another thing is to live
where the ground tends to have more radioactive elements.

Cooker: Where would that be?

Dr. Zeebot: Well, if you are a human who lives in the United States, the Colorado Plateau
is a good location.

Baggy: Are you sure?  Where would a human go to find out that the Colorado Plateau is
a good way to boost her radiation exposure?

Dr. Zeebot: The United States Environmental Protection Agency points it out.  Just tell
your human friend to Google "Calculate Your Radiation Dose" and she will find a nice
form that will tell her how much radiation she is getting.  

Cooker: How do they calculate your probable radiation exposure?

They ask you questions about where you live and if you have dental X-rays taken.  One
of the questions is "What region of the US do you live in?" and one choice is "The
Colorado Plateau".  If you choose that, it adds 90 millirems of radiation to what you are
most likely getting exposed to in a year.

How much is 90 millirems?  How does that compare to the exposure of radiation from
atom bomb tests?

The list radiation from atom bomb tests as only 1 millirem.