The biggest opportunity in waste | Robert Reed | TEDxSF State

Quick Overview

The speaker advocates for widespread adoption of composting food scraps, citing that organic waste, which comprises 24.14% of municipal solid waste (MSW) landfill content in 2018, presents the largest opportunity to reduce landfill volume, curb greenhouse gas emissions, and revitalize soil health by returning carbon and nutrients to the earth.

Key Points: Organic waste, including food scraps (24.14%) and yard trimmings (7.21%), constitutes a significant portion of the 146.1 million tons of MSW landfilled in 2018. The speaker highlights successful composting programs in cities like Paris, France, and South Korea, which have implemented mandatory collection systems for food waste. Composting food scraps and yard waste prevents methane generation in landfills, reduces greenhouse gas emissions, and sequesters carbon back into the soil. Healthy soil, enriched by compost, allows plants to draw water more efficiently, reducing the need for irrigation, as demonstrated by the healthy vineyard yield despite a three-year drought. The speaker notes that 58 US cities, including San Francisco, have replicated these successful composting programs. Teaching children about composting in schools is presented as one of the best ways to change human behavior regarding waste management. The speaker contrasts the state of waste management in 1996 (when San Francisco started its organics program) versus the current, more advanced state of the industry.

Context: The presentation takes place at a TEDxSF State event, featuring a speaker, Robert Reed, who is passionate about waste reduction and soil health. The core of his argument revolves around the massive amount of organic material sent to landfills and how diverting this waste through composting offers significant environmental and agricultural benefits.

Detailed Analysis

Robert Reed argues that the largest opportunity to improve environmental health lies in composting organic waste, which constituted 24.14% (Food) and 7.21% (Yard Trimmings) of the 146.1 million tons of municipal solid waste (MSW) sent to landfills in 2018, according to an EPA analysis. He contrasts this with the past, noting that 29 years prior, the process was less established. Reed cites international success stories, such as Paris, France, where 135 cities adopted mandatory food scrap collection, and South Korea, where 58 cities followed suit. He emphasizes that diverting this waste reduces methane emissions and sequesters carbon into the soil. He illustrates the benefit of healthy, compost-amended soil using an example from the Makami Vineyard in Napa, which maintained a healthy yield despite a three-year drought because the compost allowed the soil to retain water efficiently. Furthermore, he shows images of healthy cover crops (mustard and other plants) growing in vineyards and orchards, which feed microbial life in the soil, effectively pulling carbon and nitrogen from the atmosphere back into the earth, thus improving soil health and reducing the need for irrigation and fertilizer. Reed concludes by stressing that composting is good for the planet, animals, water systems, and human behavior, showing a picture of children learning to compost, suggesting that educating the next generation is a key strategy for promoting these beneficial practices.