Migrants wait in Tijuana, Cuban doctors to leave Brazil, air quality concerns in California

Thousands of migrants are in Tijuana, Mexico, waiting for their chance to seek asylum in the US. But they may have to wait a month or longer for that chance. Also, President Donald Trump cited Finland when he talked about raking the forest floor to prevent forest fires. We find out what Finland actually does to manage its forests. Plus, we board an Arctic icebreaker and learn how the Arctic environment is changing due to climate change.