美国有线新闻 CNN 巴西一座铁矿大坝发生爆裂 致37人死亡250余人失踪（在线收听）

First story takes us to the South American nation of Brazil, where a tragedy at an iron mine has buried parts of a city in mud.

That city is Brumadinho. It's located in the southeastern part of the country. A dam broke on Friday, causing mud and mining debris to flood into the city and in other parts of the region. At least 37 people were killed when that happened, but Brazil's government and fire department say that more than 250 others are still missing. Brazilian officials say the dam that burst was not considered to be high risk, so an investigation will be done to f???igure out exactly what led to the collapse.

In the meantime, Brazilian President Jair Bolsonaro said his administration would do everything it could to reach the victims and prevent another event like this from happening. The rescue effort has been going on around the clock and hundreds of people have been found alive, despite the fact that it's been raining heavily, making the search harder. It had to paused at one point after water levels had increased at a second dam in the area. Thousands were evacuated because of that, but they were allowed to return home yesterday after officials determined it wasn't likely to collapse.

What happened Friday was the second time that a dam owned by this same mining company had burst. The other incident happened in late 2015, it killed 19 people, buried towns in mud and polluted the environment.