The world is "losing the race" against climate change, UN chief Antonio Guterres warned Thursday at the elite Davos forum, demanding bolder action from governments to arrest catastrophic warming.

Blackstone chief executive Stephen Schwarzman, who travels frequently to Asia, said he sees an explosion of new AI businesses in China.

Sandberg was speaking at an interview hosted by German newspaper Die Zeit and UK law firm CMS at the World Economic Forum in Davos, Switzerland.