CNBC's Shep Smith reports that climate activist Greta Thunberg has been a vocal critic of the climate conference COP26 in Glasgow, Scotland, and says countries and corporations need to do more.
By: CNBC Television Title: Climate activist Greta Thunberg leads massive protest at COP26 Sourced From: www.youtube.com/watch?v=eo6JLVKV_po