why snot is green
Why snot is green and other things you absolutely have to know in the latest New Scientist podcast.
Update:
This post getting a suprisingly high number of clickthrus via my feed on this post. So, for all you who really need instant gratification around the question 'why is not green?', you can check out this loser-generated answer thread here or the enlightening article 'The Sound of Mucus'.