The International Olympiads in math (IMO), chem (IChO), physics (IPhO) and bio (IBO) for 2026 just ended. The 7 usual suspects were at the top. China (19/19 golds), India, South Korea, Vietnam, Singapore, Russia and the US. India specifically had one of its best performances of all time: 12 golds, 7 silvers. I analyzed all the past winners from these top countries since 2001 to figure out where they ended up: is brain drain really a thing? Here's what I found: – India has the most brain…