Fluorescein is an amazing substance that when added to water or alcohol will become UV reactive and make some of the coolest effects you have ever seen. Which test is your favorite?
*Hang with me*
F...
Some of those injured in the bombing of a Medecins Sans Frontieres (MSF) hospital in Kunduz, Afghanistan, have spoken to the BBC about their ordeal. At least 22 people, including MSF staff, were kille...