The Ig Nobel Prizes are moving to Zurich due to U.S. visa and safety concerns, with no return to the U.S. planned soon.

The 36th Ig Nobel Prizes, traditionally held in the U.S., are moving to Zurich, Switzerland, for the first time due to concerns over U.S. travel visa access for international attendees. Organizers cite heightened immigration scrutiny and safety concerns under current policies, making it difficult for winners and journalists to travel. The event, which honors unusual yet thought-provoking research, will now alternate between Zurich and other European cities, with no immediate plans to return to the U.S. Past winners have studied topics like zebra-striped cows, lizard pizza preferences, and alcohol’s effect on language skills.