More ideas from Matts
A study this week found that DNA damage as a result of UV rays can occur hours after sun exposure.Featured in 'This Week in Chemistry'.

Well, don't tan for more than three hours - another reason fair complexions are better than looking like an Oompa-Loompa.

Matter & Energy: Printable, Postable, & Projectable 3D diagrams for teaching product from E3Chemistry on

Basic classifications of matter.