U.S. Secretary of State John Kerry said that atrocities carried out by the Islamic State group against Yezidis, Christians and other minorities were genocide.
The U.N. children's agency warned that more than 80 percent of Syria's children have been harmed by the destructive conflict, as peace talks begin to end the Syrian war.
Commentary: The realization of global women suffrage, which represents one of the most significant power shifts in human history, occurred without women firing a single shot.
Joseph F.X. Zahra, a Maltese economist spoke at a U.N. event on economics, saying economic systems are operated by people and should be based on principles of freedom and dignity.
The U.N. Security Council discussed Jan. 11 besieged Syrian towns, after reports emerged that tens of thousands of civilians, trapped for months without supplies, are starving to death.
Africa is among the world's regions most in need of a "just and clear" global accord to combat climate change, Egyptian President Abdel Fattah el-Sisi told the U.N. climate conference in Paris.
"All African nations are contributing less to the total harmful emissions and are the most affected by climate change," he told other global leaders at gathering.
The summit aims to achieve a legally binding and universal agreement on measures to stem climate change and protect the environment.
At the United Nations, Pope Francis stressed that future development efforts remember the human face of those they seek to help escape poverty and attain a dignified life.
Beyond Francis' address, the agenda for the U.N. is loaded. Sustainable Development Goals are first on the docket, set for adoption following the pope's speech.
The United Nations is not "the devil," so a papal think tank is free to collaborate with the international body as well as people of any political persuasion, said Bishop Marcelo Sanchez Sorondo, chancellor of the Pontifical Academy of Sciences.
The church will continue to collaborate with the United Nations on any joint project that "does not go against the doctrine of the church," he said at a news conference July 15.
Five centuries-old Spanish missions in Texas newly declared as World Heritage Sites by a U.N. agency "have helped to shape the face of San Antonio," said Archbishop Gustavo Garcia-Siller.
"They are still a haven of culture and history," he said in a statement Monday. "We especially value that they continue as active parishes of the archdiocese, where hundreds of families on the city's south side continue to gather for prayer within the original walls, which many dedicated persons have worked to preserve over the years."