A scientist and his wife who used to work at a high-level U.S. energy laboratory were arrested Friday after an FBI sting operation and indicted on charges of conspiring to help develop a nuclear weapon for Venezuela. After their arrest, the two appeared in federal court in Albuquerque, New Mexico. They dealt with an FBI undercover agent posing as a Venezuelan agent. The government did not allege that Venezuela or anyone working for it sought U.S. secrets.