4. Timoci Naulusala
Timoci Naulusala, 12, addressed world leaders in Bonn Germany.
His powerful speech on climate change during National Climate Week in Fiji lifted the spirits of many and reminded the world that we need to ensure the security and wellbeing of our young people and the future generations.
Timoci goes to school in Tailevu, which was one of the many districts severely damaged in February 2016 when Tropical Cyclone Winston ravaged Fiji, taking the lives of 44 Fijians, destroying homes, uprooting families, and inflicting serious damage to crops and farms.
Since then, some of the students and teachers have been forced to work and study under a tent.
"My home, my school, my source of food, water,
money was totally destroyed. My life was in chaos."