Whether or not we grow new brain cells as adults has been the subject of an ongoing and often contentious debate. Now, evidence suggests that we can. This could help answer one of neuroscience's most controversial questions and has sparked some speculation that the process could be exploited to treat conditions like depression and Alzheimer's disease. New neurons form via a process called neurogenesis in children, as well as in adult mice and macaques. This involves stem cells repeatedly giving rise to so-called progenitor cells that proliferate to form immature neurons that later become fully developed. Prior studies on human adults have identified stem cells and immature neurons in the hippocampus.

How do you make music sound cool? How can you explain why the soundtrack to, say, any of the spy films of the 1960s still sound cool decades later? How can Foxy Lady still get into your body and make you groove so much, 55 years since Jimi Hendrix laid down those slick licks? Jungle, Thundercat or Lil Nas X might be able to tell you – but so can the people behind the soundtrack to Deathloop, one of the most effortlessly classy-looking (and sounding) games in years. Arkane's mind-bending sci-fi thought experiment is a masterclass in cool.

In 2018, while the Argentine Congress was hotly debating whether to decriminalize abortion, the Ministry of Early Childhood in the northern province of Salta and the American tech giant Microsoft presented an algorithmic system to predict teenage pregnancy. They called it the Technology Platform for Social Intervention. Diego Jemio is a journalist, educator, and podcaster. He currently writes for the Clarín newspaper (Buenos Aires), Vértice (Mexico), and other media. He is the creator of the podcast Epistolar.