The United Nations’ refugee agency says more than 1.7 million Ukrainians fleeing Russia's invasion have so far crossed into Central Europe. / RadioFreeEurope

Some humanitarian corridors are open, some are closed due to Russian shelling. / Deutsche Welle

A lengthy explanation of the letter “Z” being embraced by Russians and others who support the Ukraine invasion. / Twitter

See also: Russian troops fortifying their vehicles with logs. / The Verge

Some contemporary Ukrainian poetry from Kharkiv and five great Ukranian films. / Lit Hub, Emerging Europe

China logs its highest daily total of locally transmitted Covid-19 infections in more than two years. / Reuters

The non-profit Raheem wants to help people respond to emergencies without calling 911. / VICE

A study says the Amazon rainforest is likely on its way to becoming a grassy savannah. / CNN

Meanwhile, Amazon the company uses loopholes (like not taking responsibility for non-Amazon products) to undercount its environmental impact. / Reveal

Companies are using virtual reality to train workers in soft skills—e.g., how to talk to victims’ families if your company is responsible for a deadly accident. / Dirt

A poem for the week, from Joseph Ceravolo: “Ghosts of Spring.” / Escamandro

See also: A charming, interactive close reading of the W.H. Auden poem "Musée des Beaux Arts." "As I age, I’m making the poem better." / The New York Times

The 2022 Tournament of Books, presented by Field Notes, is now live! Welcome to our 18th Rooster. / The Morning News

Heardle is like Wordle, but for music. / Heardle

The next time someone tells you jazz is dead, point them to harpist Brandee Younger. / The Morning News

See also: Dick Cavett asks the extraordinary Oscar Peterson to explain (and perform) different styles of jazz piano./ The Morning News

Fwiw, Japan's Sessho-sek, or "killing stone," thought to have trapped a demon over 1,000 years ago, just split in half. / Spoon & Tamago