Is that the red or the white?

Factual Questions
1

a friend of mine gave up red meat for lent. today, we ate vietnamese pork sandwiches. what is it that makes beef red and pork white? is there a clear delineation between the make-up of the two?

2

I don’t knowthe answer to your question but I had to reply because your thread title made me laugh. Great Ace Ventura scene!

3

New Scientist is great for things like this. :slight_smile:

Red or White?
http://www.newscientist.com/lastword/article.jsp?id=lw442

4

thanks lachrymose, thats my answer…