41.   The announcement provoked worldwide concerns, including about the potential of cloning humans.

42.   That announcement sparked international ethical debates about cloning humans.

43.   The announcement provoked worldwide concern about the potential for cloning humans.

44.   The announcement raised worldwide concern about the implications for cloning humans.

45.   The government has cancelled aid to a South African fertility clinic after reports that a doctor there was interested in cloning humans.

46.   The government has canceled aid to a South African fertility clinic after reports that a doctor there was interested in cloning humans.

47.   The breakthrough has sparked an international debate on the ethical implications for the possibility of cloning humans.