This past Wednesday, Virginia Tech's Wu-chun Feng and Kirk Cameron introduced the general public to their latest Green500 list.
In case anyone was wondering, this list basically takes the world's most powerful supercomputers and orders them not according to how well their perform, but according to how green-oriented they are.
Thus, the Green500 list focuses on how many calculations get done by one such supercomputer for each watt of electricity it burns.
Interestingly enough, Oak Ridge National Laboratory's Titan came in third, sources
To cut a long story short, not only is this computer capable of outstanding performances, it is also highly energy efficient. Needless to say, this is good news indeed, at least as far as sustainability goes.
The science talk surrounding the Titan is made available to you here