UN's Ban: Climate change 'defining issue of our time'
United Nations Secretary-General Ban Ki-moon marches with hundreds of thousands of people in New York for the international day of action on climate change. Rough Cut (no reporter narration).
Pope Francis is greeted by cheering crowds in predominantly Muslim Albania on his first official European visit, before launching his strongest criticism of Islamist militants to date. Vanessa Johnston reports.
Following the alleged bust-up between Chris Brown and Drake's entourages, here's a look at a few other famous celeb rivalries! Mariah and Eminem, Kim Kardashian and Jon Hamm, Jen Aniston and Angelina Jolie, Jon Stewart and Glenn Beck.