By Spoorthy Raman For the last two decades, countries around the world have been in a frenzy to earmark large swaths of their lands and waters as protected areas to meet the ambitious “30 by 30” target that calls for 30% of Earth’s land and seas to be legally protected by 2030. Governments are expanding existing protected areas and setting up new ones to prevent deforestation, conserve biodiversity and reduce planet-warming greenhouse gas emissions. But how well are these protected areas working? That’s a question an international team of researchers explored in the context of 80 protected are…