I think that we need many more "Leo Effect" moments to get the climate change message out at major events when the public is watching (say at the Olympics, or the Super Bowl, and the World Cup, half-times):
https://www.washingtonpost.com/news/energy-environment/wp/2016/08/05/the-leo-effect-when-dicaprio-talked-climate-change-at-the-oscars-people-suddenly-cared/?utm_term=.6f361b75e7ddExtract: "Do celebrities matter? The answer — modern, big data approaches are showing — is pretty clearly “yes.”
Earlier this year, a team of researchers documented that when Charlie Sheen told the world that he had HIV, media attention to the virus — which had been in long decline — spiked massively.
And now, many of the same researchers are back with another demonstration. They find that when Leonardo DiCaprio used his Oscar speech earlier this year to exhort action on climate change, tweets and Google searches about the topic were enormous and, at least in the case of tweets, appear to have set a new record based on analyses between 2011 and the present.
“A single speech, at a very opportunistic time, at the Oscar ceremony, resulted in the largest increase in public engagement with climate change ever,” says John Ayers of San Diego State University, who completed the work with colleagues from the University of California San Diego, the Santa Fe Institute, and other institutions. Their study was just published in the open access journal PLOS One."
See the study at:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0159885