Earlier in the day I posted about an ecological measure against climate change. Mostly I’ve been underwhelmed by technological solutions, but a nano-powder that can capture 400 cubic meters of carbon dioxide in just one cubic meter of the powder has me intrigued. It is able to do this because it has 3.5 nanometer pores (one nanometer is one billionth of a meter). The commonly heard objection to anything nano is that because it’s so nano (i.e. small to the point of practical invisibility), it’s hard to keep track of and it’s generally unknown the impact the particles will have when loose in the world. Still, interesting. In a perfect world we’d stop the greenhouse gases at the source.