Does Mercury have a moon?

This week, a Christmas surprise in Dr Chris's tree that he'd rather not have brought home; should I drink water from aircon machines or even vehicle exhausts, will coffee make me live longer, is the flag planted during the Moon landing still there, what's the scientific basis of itching, which planets don't have a moon, and what makes mosquitoes prefer me to other people? As South Africa recognises 100 years of radio, Dr Chris and Talk Radio 702's Relebogile Mabotja take on your science questions...