https://www.sciencedaily.com/releases/2021/04/210413170705.htm

A group of scientists, many tied to Michigan State University, examined nearly 55,000 protected areas across the world to understand what it took to effectively protect their forests -- a key benchmark to protecting habitat and preserving natural resources. They conclude that it's important to protect the forests exposed to the most threats in areas close to cities and be prepared to be strict in enforcing rules intended to stop deforestation.

In a recent issue of Science of the Total Environment, researchers noted that more than 4 million square kilometers have been designated as protected areas in the past decade, without documentation of how effective such areas across the globe are at protecting.