http://web.physics.twsu.edu/facsme/nitro.htm
http://www.physik.uni-augsburg.de/~ubws/nitrogen.html
From Wichita State University’s Fairmont Center comes Liquid Nitrogen Demos, a page devoted to experiments that teach high-school students the physics of liquid nitrogen. Less educational, but just as fun, is 1001 things to do with Liquid Nitrogen, a page of sophomoric tricks originally put together by the University of Frankfurt’s Frank Illenberger.

http://www.climate-dynamics.rl.ac.uk/
Casino-21 is the name of an innovative project whose aim is to enlist the help of the world’s personal-computer users to help understand how Earth’s climate is changing. Once enough would-be climate modelers have signed up, the project, based at the UK’s Rutherford–Appleton Laboratory, will give each participant a unique model to install and run on his or her PC like a screen saver.

http://mintaka.sdsu.edu/GF
San Diego State University astronomer Andrew Young has compiled and contributed to An Introduction to Green Flashes, an extensive collection of information and references about the much-sought atmospheric phenomena known as green flashes.