News World’s ‘greatest test’ delays climate talks The coronavirus pandemic that has caused 47,000 deaths worldwide represents what officials call humanity’s worst crisis since World War II. By Arete News - April 1, 2020 The Eiffel Tower lit up on the eve of the 2015 talks that led to the historic Paris Agreement (AN/Yann Caradec) You need to login to view this content. Please Login. Not a Member? Join Us