You may want to have a look at my upcoming article in Berita MMA at
http://www.geocities.com/HotSprings/2188/internet30.html
titled "Clouding the issue"
A.Prof.Rampal had written a good article "HAZE: Are we hazy about the facts." which can be viewed at http://www.geocities.com/HotSprings/2188/hazemma.html
Hope things clears up. :)