Many countries met in London to talk about ship pollution. They wanted to make a new rule to help the environment. But the United States and Saudi Arabia did not agree. They said no to the plan, so the meeting stopped.

Some countries wanted to help the environment. They wanted ships to use cleaner fuel. This would make less pollution. But some countries were worried. They thought the new rule would make things more expensive.

Now, the countries will wait one more year. They will talk again next year. The plan to cut ship pollution is not ready. Many people are sad because they wanted to help the Earth soon.