http://jiahao.github.io/julia-blog/2014/06/09/the-colors-of-chemistry.html A step-by-step tour on how to derive the visible spectra from absorption and emission spectra.
best of lotd
http://www.tedunangst.com/flak/post/signal-safe-strcpy POSIX forbids using strcpy in signal handlers. Here's how to get around that.
http://basalgangster.macgui.com/RetroMacComputing/The_Long_View/The_Long_View.html The Long View writes about long-forgotten technical details from the original Macintosh system.
http://articlesofmeritnotlisted.com/quiltstuff/Bananas.html/Bananas.pdf A comprehensive history of the candlestick salad.
http://www.nytimes.com/2005/11/06/national/06island.html?_r=0 America's dangerous floating islands.
http://en.wikipedia.org/wiki/Capitol_Hill_Babysitting_Co-op This babysitting co-op makes for an excellent example of how monetary and fiscal policy work.
Valve has released the tool used to make its animated skits. It's already been put to good use to make the impressive Falcon punch video and a parody of Kayne West's music video for his song Power. I expect some great, high-quality videos to be made by hobbyists with this tool over the next year.