Plans by Mark Zuckerberg’s Meta to build an AI data center in the US that runs on nuclear power were thwarted in part because a rare species of bee was discovered on land earmarked for the project, according to people familiar with the matter.

Zuckerberg had planned to strike a deal with an existing nuclear power plant operator to provide emissions-free electricity for a new data center supporting his artificial intelligence ambitions. However, the potential deal faced multiple complications including environmental and regulatory challenges, these people said.