Question
What is it about spiders that makes many people scared or
uneasy?

Answer
Ben,

I can't give you a short answer but one of my favorite books that talks about why humans fear what we fear is "The Dragons of Eden: Speculations on the Evolution of Human Intelligence" by Carl Sagan (1977). Check it out from the library.

Jack DeAngelis
http://www.livingwithbugs.com