Now playing Next world news Orthodox Christians celebrate Christmas From St. Petersburg to Bethlehem and beyond, presidents joined worshippers to usher in Christmas Day 07/01/2018
Now playing Next world news Fears for '90 university students' held in Iran crackdown Some of the young people detained by the regime are said to be unaccounted for 07/01/2018
Now playing Next world news $570M Powerball jackpot winner in New Hampshire A jackpot-winning ticket was sold in New Hampshire in Saturday's $570 million Powerball drawing, a day after someone won a huge Mega Millions prize. 07/01/2018
Now playing Next world news Trump says he's open to talking to North Korea's Kim Jong Un President Donald Trump said Saturday that he would be willing to talk by phone with North Korea's leader Kim Jong Un, but said "we have a very firm stance." 07/01/2018
Now playing Next world news Scientists say implant may be the key to beating addiction The findings offer promise for those who suffer from life-threatening addiction and other destructive disorders. 07/01/2018
Now playing Next world news Pope on Epiphany: Don't make money, career your whole life Pope Francis said Saturday during Epiphany Mass that money isn't everything: "Some stars may be bright, but do not point the way," he said. 07/01/2018
Now playing Next world news At least 17 civilians killed in Syria airstrikes, says monitor The UK-based Syrian Observatory for Human Rights says children were among the dead on Saturday in the besieged enclave of Eastern Ghouta near Damascus 07/01/2018
Now playing Next world news 'Raw water' products just dumb, experts say Raw water or live water products may sound good, but there's no guarantee that untreated water is not loaded with germs or chemicals, experts say. 07/01/2018