Whatever happened to our sibling series? It’s back! And guess who’s the heir apparent

['Benazir Samad', '.Wp-Block-Co-Authors-Plus-Coauthors.Is-Layout-Flow', 'Class', 'Wp-Block-Co-Authors-Plus', 'Display Inline', '.Wp-Block-Co-Authors-Plus-Avatar', 'Where Img', 'Height Auto Max-Width', 'Vertical-Align Bottom .Wp-Block-Co-Authors-Plus-Coauthors.Is-Layout-Flow .Wp-Block-Co-Authors-Plus-Avatar', 'Vertical-Align Middle .Wp-Block-Co-Authors-Plus-Avatar Is .Alignleft .Alignright'] TPR: The Public's Radio 2025-08-27 11:52:44

Abdul Wahid Khan, the youngest son in his family (right), with his older brother Abdul Wajid Khan. (Shayan Ali Khan)Our series “The Science of Siblings” last year was immensely popular, tackling questions that many a sibling has pondered. There was one fascinating sibling story that we came upon after the series concluded — so here it is now! The Mongol Empire embraced one form of the practice; Genghis Khan left the core of his empire to his youngest son. While their father passed away a few years ago, their mother still lives there with the youngest brother, his wife and their five children.