Recycling is mandatory for residents and businesses in Pittsburgh according to the document. Recycling helps recover resources, save energy, and accounts for 4% of the world's raw materials. Most wood, metal, plastic, and minerals consumed in industrial countries are used and discarded, contributing to shrinking forests and climate change. Old recycling products are turned into new ones, and plastic bottles must be carefully sorted by chemical type as recycling goes from collectors to mills to manufacturers to markets. The document pledges to recycle more and reuse plastic bottles, and suggests putting up flyers and a website to spread awareness of recycling's benefits.