We continue our series around the 20 most influential moments of the last 20 years as voted for and suggested by our listeners.
Today we are looking at Climate Change: The Global Wake Up Call
Lots of very impressive young people here are taking action on climate change.
Flossie is one such youngster, who at the age of 13 has 4 years experience of climate change activism under her belt.
Andrea talks to her and Arshdeep, another young activist, about what needs to be done.