Ruby is more than Rails
As scientists, we love programming in Ruby. Sadly, Ruby has no equivalent to the wonderful NumPy, SciPy, and matplotlib libraries you can find in Python. If you are like us and believe Ruby needs scientific packages in order to grow as a language, support Science in Ruby by buying a shirt.
100% of profit will go towards putting on Science Ruby, the first annual conference for those who use ruby for science, engineering and math.
Check out SciRuby for progress being made in developing scientific packages in rub.