9 a.m. — MPR News with Kerri Miller The world's oceans are heating up. According to a study published in January in the journal "Science,” 2018 was the hottest year ever for our oceans, and the rate of that heat increase is faster than previously thought. That could be because the world's oceans absorb up to 90 percent of the warming caused by carbon emissions. That's a huge problem for sea life. But it's also a problem for those of us who live on land — because the oceans buffer us from the full effects of climate change. MPR News host Kerri Miller spoke with Ayana Elizabeth Johnson, a marine biologist and CEO of Ocean Collectiv, a group looking to find solutions for coastal communities that are the most vulnerable to climate change. 10 a.m. — 1A with Joshua Johnson For now, Ukraine is the biggest story in American politics. Since its break-up with the Soviet Union, it has been wooed by the West and invaded by Russia and it now finds itself at the heart of the Trump impeachment scandal. Foreign favors, murky money, and Ukraine explained on 1A. 11 a.m. — MPR News with Angela Davis NPR's sports correspondent Tom Goldman joined MPR News host Angela Davis to talk about how he became the only sports reporter in public radio, the NBA’s current feud with China, if student athletes should get paid and how more athletes are using their voice to speak about social issues. Their conversation is part of MPR News Journalist Series. Noon — MPR News Presents Two new documentary podcasts from APM Reports: "How Colleges are Mishandling Racial Tensions on Campus" by John Hernandez and "Ditching the Lecture for Active Learning" by Stephen Smith. | 