QUESTION: Fix punctuation: Key to this are the UNs 8 Millennium Development Goals MDGs adopted in 2000 with a 2015 deadline
ANS: Key to this are the UN's 8 Millennium Development Goals (MDGs), adopted in 2000 with a 2015 deadline.

QUESTION: Fix punctuation: His name to know many people on our planet even if they understand music not much
ANS: His name to know many people on our planet, even if they understand music not much.

QUESTION: Fix punctuation: The conference targets health ministers politicians government officials patients organizations and health economists
ANS: The conference targets health ministers, politicians, government officials, patients organizations and health economists.

QUESTION: Fix punctuation: Irish inventor who created the first postagestamp perforating machine to facilitate stamp separation
ANS:
Irish inventor who created the first postage-stamp perforating machine to facilitate stamp separation.