Alchemy

The compound zinc oxide (ZnO) is called philosopher's wool. Alchemists, as part of their rituals, would burn zinc in air and collect the residue, which formed into white woolly tufts. 

http://en.wikipedia.org/wiki/Alchemy

Lab
http://www.alchemylab.com/

History
http://historyofalchemy.com/

Tree
http://www.speakingtree.in/search/Alchemy

Tube
https://www.youtube.com/results?search_query=Alchemy

Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=Alchemy

Solutions
http://www.alchemysolutions.net/

Co
http://www.alchemist.co.in/

Innovation
http://innovationalchemy.com/

Org
http://al.chemy.org/

Diagram
http://alchemicaldiagrams.blogspot.com/