What do people think is most likely to cause human extinction?
% answering the following question with each outcome: "Which of the following, if any, do you think are the most likely to cause human extinction? Please select up to three."
Sample Size: 2192 adults in GB, 1002 adults in France, 2316 adults in Germany, 947 adults in Denmark, 1056 adults in Spain, 1035 adults in Italy.
