Adams, V.M., Visconti, P. ORCID: https://orcid.org/0000-0001-6823-2826, Graham, V. & Possingham, H.P. (2021). Indicators keep progress honest: A call to track both the quantity and quality of protected areas. One Earth 4 (7), 901-906. 10.1016/j.oneear.2021.06.014.