Actor Leonardo DiCaprio’s call for action on climate change during his acceptance speech at the Academy Awards ceremony drew more attention to the issue than the Paris Agreement in 2015 or Earth Day, a new study reports.

According to a study titled “Big Data Sensors of Organic Advocacy: The Case of Leonardo DiCaprio and Climate Change” published in Plos, DiCaprio’s acceptance speech for his Best Actor award didn’t cause a huge increase in media coverage of climate change. However, it did cause Twitter activity about climate change to increase 636 percent.