At the United Nations this week, four leaders showed why tackling climate change is complex.

Hundreds of world and business leaders are gathering to keep the fight against climate change alive.

The United Nations’ top court has issued a landmark advisory opinion on climate change.

The United Nations’ top court in a landmark advisory opinion says countries could be in violation of international law if they fail to take measures to protect the planet from climate change, and nations harmed by its effects could be entitled to reparations.

The Pacific island nation of Vanuatu is living with the daily realities of climate change, as intensifying cyclones, rising seas and saltwater intrusion reshape its coasts and disrupt life.