Greta Thunberg—the 16-year-old girl who just one year ago started a global climate movement—has spoken loud and clear about demanding action against climate change’s devastating effects. It’s now time for the adults to act and hold our leaders accountable.

Brazil and the developing world are not the only culprits on climate change. The developed world too shares the blame for CO2 output. Unfortunately, the international system lacks the capacity to address these gaps. Is it time to reconsider activism and action that doesn’t depend on states?

Scaling up climate-related policies and investing in sustainable infrastructure could increase GDP by up to 2.8 percent on average across G20 countries by 2050. Aiming for net zero emissions is not only smart policy, but a growth opportunity for Latin American countries.

The European Union and Latin America and the Caribbean have laid the groundwork to place the low-carbon and climate-resilient agenda at the heart of their relationships.

Chile and Argentina should use COP25 as an opportunity to renew and strengthen the Antarctic Treaty System. It would benefit the environment, their diplomatic leadership and global stability.