Ecco a voi l’ingegneria genetica

Ci stanno pensando in Cina: pare stiano lavorando a una tecnica di modifica dei geni degli embrioni perché nascano bambini più resistenti all’HIV, vaiolo, colera. Al momento la reazione di chi legge è ambivalente: magari!, da un lato, e un grugnito di preoccupazione dall’altro.

When Chinese researchers first edited the genes of a human embryo in a lab dish in 2015, it sparked global outcry and pleas from scientists not to make a baby using the technology, at least for the present.

It was the invention of a powerful gene-editing tool, CRISPR, which is cheap and easy to deploy, that made the birth of humans genetically modified in an in vitro fertilization (IVF) center a theoretical possibility. [link]

Le notizie sul tempo passato di fronte agli schermi potrebbero esser state grandemente esagerate

Lo dice un nuovo studio, l’ennesimo sulla materia.

But when looking at screen time in isolation from other factors known to affect sleep, like neighborhood conditions, Przybylski only saw a modest association. For children between six months and five years of age, every hour of screen time was linked to about eight minutes of lost sleep; for children older than five, it was just three minutes. [link]

Versione breve: potrebbe non influire sulla qualità del sonno quanto altri fattori (tipo di vita nel quartiere, tipo di vita famigliare, tanto per dirne un paio).

Un impianto per camminare di nuovo

For the nearly 1.3 million people who are paralyzed because of spinal cord injuries in the US, the hope is that standing and stepping can help bring more independence, improve circulation and bone density, and boost cardiovascular health. “There’s no real treatment for people with this type of injury,” says Susan Harkema, associate director of the Kentucky Spinal Cord Injury Research Center at the University of Louisville and senior author of the New England Journal of Medicine paper. “This isn’t taking them back to before their injury, but it’s giving them significant, incremental return of function, and health — and that can make their daily lives substantially better.” [link]

La speranza è che questi impianti migliorino sempre di più.