Khalil's attorneys say the government's case against their client largely rests on a single letter from Secretary of State Marco Rubio alleging that Khalil participated in "antisemitic" and "disruptive activities."

Scientists have extracted the oldest RNA molecules out of a wooly mammoth, gaining a snapshot into the processes at work in the extinct mammal's body just before it died.

The ruling is the first time that the court has imposed requirements on adult consumers in order to protect minors from having access to sexually explicit material.