Today's Download covers two big stories. A European fertility group is urging international caps on how many children a single sperm donor can create after people like 47‑year‑old Ties van der Meer discover dozens of half‑siblings, some reporting up to 25 siblings. The proposal aims to prevent the feeling of being "mass‑produced" but may face enforcement challenges.

In AI news, researchers are building "world models" to help machines understand physical spaces, a frontier beyond language‑only large language models. MIT Technology Review will host a LinkedIn Live session on July 14 with senior AI editor Will Douglas Heaven and Sam Sinha, head of world models at 1X Technologies, to discuss robotics implications.

Other headlines include Apple suing OpenAI over alleged trade‑secret theft, Nobel chemist Omar Yaghi moving to lead a Chinese AI materials lab, and the EU tightening rules on children’s social‑media use. A quote from a leaked text by former Apple engineer Chang Liu underscores the ongoing corporate espionage concerns.