The head of the International Atomic Energy Agency (IAEA) has called on Iran to explain why traces of enriched uranium were found at previously undeclared nuclear research sites three years ago.

Read CNN's Judaism Fast Facts and learn more about the religion of the Jewish people.

New research has suggested a dog's eyes well up with tears of happiness when reunited with their owner after a period of absence. The tears may help cement the bond between human and dog -- a relationship that goes back tens of thousands of years.

A lot has happened since Gulf Arab states downgraded ties with Iran in January 2016 when an angry mob stormed the Saudi embassy in Tehran and set fire to it following the Saudi execution of a prominent Shiite cleric.

CNN's David McKenzie joins a disposal team who slowly and carefully crawls every inch of ground to locate and remove live ammunition and ordinance littered throughout Ukraine.

Sandra Ortiz struggles to talk about her family's restaurant without breaking down into tears.

At least 32 people have died since Friday in flash flooding and landslides triggered by heavy monsoonal rains in two of India's northern states.

With this week marking a year since the Taliban regained control of Afghanistan, football star Nadia Nadim is coming to terms with a "weird feeling."

Presidential candidate Raila Odinga has formally filed a petition challenging the election results in Kenya's Supreme Court on Monday, according to one of Odinga's lawyers, Daniel Maanzo.

A woman believed to be the mother of two children whose remains were found in suitcases in New Zealand last week is in South Korea, a Seoul police official told CNN on Monday.