As we transition from industrial to digital culture, civilization continues to generate huge amounts of waste. (chrisdoylestudio.com)
Both farming and food processing yield huge amounts of waste matter like food peels, oil and animal matter that can be biologically processed to produce gas that can be used for heating homes, for generating electricity as well as in a refined form used to power cars. (earthtimes.org)
Demolishing buildings to make green space releases dust into the air and produces huge amounts of waste - often it's more environmental to work with what you've already got. (treehugger.com)