natural resources

Figure 30: The U.S. Energy Information Administration (EIA) projects world energy consumption will increase by 25% from 2015 to 2040, with the majority of increases occurring in developing (Non-OECD; Organization for Economic Cooperation and Development) countries.[fn][[nid:1664]][/fn]

Figure 28: The city buses in Stockholm and Uppsala Sweden are powered with biogas produced by anaerobic digestion of municipal and domestic waste (mainly food waste, yard waste, and sludge from sewerage treatment facilities).[fn][[nid:1662]][/fn]

Figure 27: The majority of plastic packaging is made with one of six plastic resins: polyethylene terephthalate (PETE); high density polyethylene (HDPE); polyvinyl chloride (PVC or vinyl); low density polyethylene (LDPE); polypropylene (PP); or polystyrene (PS). All other plastics are classified as “other” and are assigned SPI number 7.[fn][[nid:1660]][/fn]

Figure 25: Learn more about these various minerals.[fn][[nid:1658]][/fn]