No Sound on FOX news ALL day today, ALL other channels are fine

Hi there user_6qt1ug, thanks for reaching out here on the community forums! Sorry to hear you haven't been able to get any audio! 
A common cause for a loss of audio on certain channels, especially those with live broadcasts, is if audio description is turned on, often incidentally. You can find steps to ensure it's turned off here.
Alternatively, another common fix for audio issues (along with many other issues that may occur) is by rebooting the X1 TV Box. Have you already given this a shot, and are there any other troubleshooting steps you taken?