Claim: The World Science Festival is headquartered in the United States.
Evidence: The World Science Festival is an annual science festival produced by the World Science Foundation , a 501 -LRB- c -RRB- -LRB- 3 -RRB- non-profit organization headquartered in New York City.
The City of New York , often called New York City or simply New York , is the most populous city in the United States.