What's happened since the 2015 Paris agreement? Not enough - but more than you might think.

For several island nations, the Paris agreement’s success is an existential quest: Many may become uninhabitable if the global temperature rises by 1.5 degrees.

It also aimed to achieve a subsequent decrease of 9-11% of 2005 levels by 2025, meaning the U.S. would reduce greenhouse emissions by 26%-28% in the first ten years of the Paris Agreement.

With the US out of the Paris agreement (but other countries sticking to their pledges), the world is projected to warm an additional .3 degrees C by 2100. Business Insider Subscribe Newsletters ...

President Donald Trump pulled the US out of the Paris Agreement. The stakes couldn’t be higher for the planet and our ability to adapt.

The Paris agreement is the primary international accord aimed at to tackling climate change. Trump has started the process of pulling the US out.

The Paris Agreement was finalized at a global climate conference in 2015, and entered into force in November 2016 after enough countries, including China and the United States, ratified it.