Sara

I’ve got to hand it to the engineers out there looking for ways to make our society more sustainable. The “green movement” has gone from fringe to fashionable, and now there are even varying degrees of green-ness (forest, bright, etc.). But as “new” as the green movement/sustainability seems, I find it ironic that one of the most-publicized instances of a sustainable practice is decidedly old school: using ice blocks to cool a building. “Because electricity is needed to make the ice, water is frozen in large silver tanks at night when power demands are low. The cool…