Analyses in 2021

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  • Sustainability has been added as a ‘pillar’ of the Olympic movement, but this analysis examines each Summer and Winter Games since 1992 to find that the performance of host cities across a range of indicators has been declining over time.

    • Martin Müller
    • Sven Daniel Wolfe
    • Annick Leick
    Analysis
  • Most of the world’s farms are small. This study finds that smaller farms have higher yields and biodiversity than larger ones but little difference in greenhouse gas emissions and profits.

    • Vincent Ricciardi
    • Zia Mehrabi
    • Navin Ramankutty
    Analysis
  • Fossil fuel infrastructure impacts land use. This study estimates the present value from restoring lands with non-producing gas wells at US$21 billion at a restoration cost of US$7 billion. Deciduous forests, grasslands and chaparral had especially high net benefits.

    • William Haden Chomphosy
    • Sofia Varriano
    • Matthew D. Moran
    Analysis
  • As cannabis production becomes legalized and legitimized, its production will likely change and expand with attendant environmental impacts. This life cycle analysis of energy and material costs across the United States focuses on indoor cannabis growing operations.

    • Hailey M. Summers
    • Evan Sproul
    • Jason C. Quinn
    Analysis
  • Wise management is critical to sustaining fisheries. This study finds that rebuilding plans, ratification of international agreements and harvest control rules yield strong benefits and that these are cumulative.

    • Michael C. Melnychuk
    • Hiroyuki Kurota
    • Ray Hilborn
    Analysis
  • A study of 177 forest user groups shows that these are more likely to self-organize to monitor rule compliance for forest management when the groups are larger, they design the rules and they are located either close to or far from markets.

    • Graham Epstein
    • Georgina Gurney
    • Graeme S. Cumming
    Analysis