The U.S. cancels Colombia tariff threat

From the BBC World Service: The Trump administration U-turn on tariffs and other sanctions comes as Colombia agreed to take back its citizens who were deported from the U.S. Then, a Chinese artificial intelligence start-up has released its largest language model to rival OpenAI and Meta, and it’s got the U.S. AI sector worried. Plus, we’ll look at the costs to clean up Guatemala’s polluted lakes and rivers.