A question

In films of nuclear tests, you typically see these cloud formations that appear a split second after the bomb explodes. What's causing this? My initial hunch is something about a sudden increase in temperature in the air above and around the bomb. In some videos you see these long stringy ribbon like clouds from the air (it can't be debris because the mushroom cloud is not even completely formed). Thanks!

The ancients and their understanding of "science" and the tension with religion

There's an interesting debate about the historical evolution of science within the ancient world and the tension between "science" and "religion." Some of this stems from a big argument over Carl Sagan's understanding that religious mobs destroyed the Library of Alexandria and murdered its director Hypatia. My experiences are that it seems religious minded people try to soft pedal any notion that science existed as science as we understand it, but I'm curious if anyone has some thoughts.

Any statistics whizzes around?

I got an A in the class in college, but I'm not sure how I would go about getting an answer to this question, or maybe it's a different kind of math.

I'm working on a composer, who I have a hunch, a lot of music for some reason vanished. He wrote 30 symphonies, and there are two unusual compositions he wrote called "Pieces," which have at least ONE movement from the symphonies. I have only looked at one so far, the other "Pieces" may have another movement or several from the symphonies.

Is there a way in statistics to ask a question along the lines: "Out of X movements in the symphonies, and because there are Y movements in the Pieces, it would seem likely that the movements in the Pieces that are NOT in the symphonies are from lost symphonies."

Thanks for any advice or suggestions.
Kitty Borg

Metal Questions

Okay so, I work at a Blacksmith forge and started a Twitter "Metal Facts" page. So I have to come up with metal facts that are kindda cool. While watching History Channel, which isn't always accurate... okay lets be honest, is NEVER 100% accurate, they stated the following:

More steel in the US is used to make bottle caps than to manufacture automobile bodies.

I tried goggling this to see if it were true with no luck. So any thoughts?

My SECOND question, while looking for an answer to the first, I found THIS fact:

Intelligent people have more zinc and copper in their hair

It seems like it wouldn't be right, but on this page of "weird facts" the majority of the ones I know are all true, and the few I looked up pose to be true... so I'm wondering about it...