Table 1. Comparison of Environmental Impacts between Additive Manufacturing and Traditional Manufacturing^a.

^aMorrow et al.⁸ Figures: Reprinted with permission from Elsevier. Copyright 2007 Elsevier. Telenko and Seepersad¹³ Figure: Reprinted with permission from Emerald Publishing Limited. Copyright 2012 Emerald Publishing Limited. Wilson et al.⁵⁹ Figure: Reprinted with permission from Elsevier. Copyright 2014 Elsevier. Faludi et al.³⁵ Figure: Reprinted with permission from Emerald Publishing Limited. Copyright 2015 Emerald Publishing Limited. Tang et al.⁶⁰ Figure: Reprinted with permission from Elsevier. Copyright 2016 Elsevier. Paris et al.³⁶ Figure: Reprinted with permission from Elsevier. Copyright 2016 Elsevier. Minetola and Eyers⁶¹ Figure: Reprinted with permission from Thingiverse. Copyright 2012 Thingiverse. Raoufi et al.⁶⁵ Figure: Reprinted with permission from Elsevier. Copyright 2020 Elsevier. Muñoz et al.⁶⁶ Figure: Reprinted with permission from Springer. Copyright 2021 Springer. Zhang et al.⁶⁷ Figure: Reprinted with permission from Elsevier. Copyright 2021 Elsevier. Lyons et al.⁶⁸ Figure: Reprinted with permission from Springer. Copyright 2021 Springer.

^*The maximum length of the bar is set to the largest value in each comparison group.

^†The values in italic mean approximate values read from the graphs in the references.