"Joseph" wrote in message
om...

I noticed that US citizens build their homes from wood even though
they are extremely vulnerable to Tornados, after the victims` homes
has been destroyed by tornados, people rebuild their homes from wood
again.
Isn`t that a foolish thing to do?

According to Science News, if you pick a random point in the part of the USA
that is most prone to tornadoes, you can expect that point to be hit by a
serious tornado about once every 4,000 years. That's not enough to worry
about.

On the other hand, people in the USA are constantly modifying their houses.
For example, my wife and I have more than doubled the size of our house
during the 20 years we've lived here. Such modifications are much easier for
wooden houses than concrete ones.

More details he

http://www.sciencenews.org/articles/20020511/bob9.asp