Why this Sydney-based expert says Nepal floods prove 'we need better climate communication'

The death toll from the devastating floods in Nepal has surpassed 900, with nearly 4,500 people still missing, including several Australians. As Nepal grapples with the aftermath of the disaster, we speak to climate change expert Professor Krishna Shrestha from the University of New South Wales about whether the disaster could have been prevented, who should be held accountable, and what realistic steps Nepal can take to tackle climate change, despite contributing only a minuscule share of global greenhouse gas emissions.