These formulae provide software tailored to scientific endeavors. Need to store large amounts of data in a sparse matrix, solve a huge optimization problem or process the images from your space telescope? Maybe we can help!
Just brew tap homebrew/science and then brew install <formula>.
If the formula conflicts with one from mxcl/master or another tap, you can brew install homebrew/science/<formula>.
You can also install via URL:
brew install https://raw.github.com/Homebrew/homebrew-science/master/<formula>.rb
brew help, man brew, or the Homebrew wiki.