"I focused on...green glass used for wine bottles. Glass is heavy and inert...The commodity that glass can be ground into, called 'cullet,' just isn't very valuable. The alternative to recycling green glass is to use virgin materials-sand-and add the chemical compounds and color required. A cubic yard of mixed cullet can actually be much more expensive to convert into usable glass than a cubic yard of sand, depending on conditions. That means that 'recycling,' when you add on the fuel costs and pollution impact of collecting small quantities of the stuff from neighborhoods, actually uses more energy, and wastes more resources, than using virgin materials."
Notwithstanding these facts about green glass, do we have a moral duty to recycle green glass?