ScienceGlobal issuesHow different are the brains of boys and girls?To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceGlobal issuesConor Dillon | Gabriel Borrud02/19/2026February 19, 2026A new study shows a sex difference in the early growth of the human brain. Does it matter?https://p.dw.com/p/595X9Advertisement