Okay kiddo, do you know what a to-do list is? It's a list of things you need to do or want to do, right? The Copenhagen Consensus is kind of like a really big to-do list, but instead of just things you need to do at home, it's a list of things that could make the world a better place.
People from all over the world come together to create this list, kind of like a team of people working together to make the world a better place. They decide what problems are the most important and urgent to focus on, like helping people who are hungry, improving healthcare, or protecting the environment.
Then, they figure out which solutions will work best for each problem. They look at lots of ideas and ways to fix these problems, and then they decide which ones are the most effective and affordable. They pick the solutions that will do the most good for the most people, using the least amount of money.
This way, they can make sure that money is being spent in the best way possible to help people all around the world. It's like making a game plan to make the world a happier and healthier place, and the Copenhagen Consensus helps us do it in the most efficient ways possible.