Man he got old! Are you sure this is a picture of fr. Melitios?
I've known him since his election... I believe it is simply that he grew out his hair (now that he is a monk in a monastery) and you can now see all the gray!
Abbotting will do that to you.
What is the priest's educational and professional background? His qualifications to speak on the topic.
Who? Abbot Meletios? He gives that summary in his introduction.