Sofia Martinez of KUNM and The Nation, where she wrote about the plight of the Trinty Test downwinders of the Tularosa Basin and the attempts to renew and reform the Radiation Exposures Compensation Act to include them.

Mark Ludwig, violist emeritus of the Boston Symphony Orchestra and author of the new book Our Will to Live, about the remarkable musical life in the Nazi concentration camp of Terezin (Theresienstadt.)

Megan Kate Nelson, historian and author of Saving Yellowstone, about the exploration of the Yellowstone Basin, its conversion into a National Park, and how this fits into the historical context of the Reconstruction era. 

Catherine Rhodes, Assistant Professor of Ethnology at UNM and co-author of the new book Migration Narratives -- talking about how 2 generations of Mexican immigrants have transformed a small city in the Mid-Atlantic states.

The coronavirus crisis produced the opportunity to create miracle vaccines. So much for the good news. The bad news is, the vaccine-makers are breaking the bank over-charging the world. Just one offense cited in John Nichols's new book Coronavirus Criminals and Pandemic Profiteers. Politicians and corporate chiefs make villainy and greed a public-private partnership.

Vladimir Putin is threatening to use nuclear weapons because of "aggressive language" by opponents of his invasion of Ukraine. Sticks and stones may break his bones, but harsh words have Putin brandishing nuclear threats. He's done this before, but never during actual war-time. Nuclear weapons expert Joseph Cirincione of the Quincy Institute on what Putin's threat really means. Does the concept of nuclear arms control have a future now?

A big reason the Russian invasion of Ukraine is going so slowly is that almost all Ukrainians know exactly how bad life can be under Russian domination. They know this because of family and neighborly ties, and because of Ukraine's lively news ecosystem.  Gulnoza Said of The Committee to Protect Journalists on how reporters in Ukraine are working under siege and how reporters in Russia are under attack by their own government.

Something new under the sun...the American use of declassified intelligence to predict or pre-empt Russian aggression against Ukraine. The wide public release of when, where and how the Russians planned to attack didn't stop them, but it did help unify the Western response, rejecting President Putin's war. Shane Harris of the Washington Post says so far there's been no pushback from inside the US intel community, but the accuracy of the predictions has undoubtedly rebuilt some confidence in the global credibility of the United States. 

You might think the flat earth obsession was old hat, knocked into anachronism by a world in which so many people flown around the world in planes, but has more adherents today than ever before.  Kelly Weill's new book Off the Edge looks at the history of the Flat Earth movement and the other conspiracy theories it might have helped to flourish. In a world that rejects facts, every lost argument becomes confirmation for the believers, many of whom pray at the church of YouTube.