Whether you follow the US format of writing the date, or that used in much of the rest of the world, tomorrow is a pretty striking date. It’s either 2/22/22, or 22/2/22. For most of us, that’ll bring no more than a smile as we note it through the day. But for some, it indicates good luck is on the way. Wagers are being made, and commemorative products sold – helped by the fact the day falls on a Tuesday, allowing for a little numeric wordplay. Clearly, any suggestion of significance beyond a striking pattern is nonsense. But why do people seek to find meaning and connection amid such a random sequence? Social psychologist Barry Markovsky, of the University of South Carolina, provides us with a short history of numerology.

Meanwhile, stay tuned to our rolling coverage of events relating to Ukraine, and read how tensions are also rising on the other side of the world, where a Chinese vessel shone a military-grade laser at an Australian air force plane.

Stephen Khan

Executive Editor, The Conversation International

Is “Twosday” as special as some corners of the internet seem to think? articular/iStock via Getty Images Plus

Happy Twosday! Why numbers like 2/22/22 have been too fascinating for over 2,000 years

Barry Markovsky, University of South Carolina

Numerology ties in with how our brains work, but that doesn’t mean its claims make sense.

Margot Heuman

LGBT+ history: The Amazing Life of Margot Heuman – how theatre gave voice to a queer Holocaust survivor

Erika Hughes, University of Portsmouth; Anna Hájková, University of Warwick

For the first time, the testimony of a 94-year-old Holocaust survivor tells the story of life and love in the camps as a young lesbian woman.

Tanzanian leader Julius Nyerere, a Swahili advocate. Keystone/Getty Images

The story of how Swahili became Africa’s most spoken language

John M. Mugane, Harvard University

Over two millennia, Swahili has built bridges among people across Africa and into the diaspora.

In French and Spanish

Le rêve de Jeff Bezos ou peut-on, vraiment, rajeunir en reprogrammant nos cellules ?

Marie José Stasia, Université Grenoble Alpes (UGA)

La technique de reprogrammation cellulaire est très prometteuse pour développer de nouveaux traitements, mais n’est pas, encore, digne de la fontaine de jouvence.

La diferencia entre los TikTok tics y los tics con base neurobiológica

David A. Pérez Martínez, Universidad Complutense de Madrid

Recientemente se ha hecho popular la aparición de tics entre adolescentes que aparecen esta red social. Este comportamiento no debería equipararse a trastornos con una base neurobiológica clara.