From droughts to flash floods, failing crops and increased disease, the earth's climate is changing. This Debate -- a regular series produced by the UNICEF's Office of Research - looks at the science, the politics, the impact, and the next generation. 

Guests are: the head of climate change at ODI, Dr Tom Mitchell; Senior Fellow in the Climate Change Group at the International Institute for Environment and Development, Professor Saleem Ul Huq, and head of the Nigerian youth climate coalition, Ms Esther Agbarakwe.