Emma Tracey starts 2024 by hearing from Kenya and Costa Rica, two of the countries ranked highest in the fightback against climate change. She talks to on-the-ground reporters in Nairobi and San Jose, while Climate Question regular Mia Moisio explains which nations score well on the Climate Action Tracker and what the rest of the world can learn from them.

Reporters: Michael Kaloki in Kenya and Cindy Regidor in Costa Rica

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