Negative emotions get exhausting over time. So there was a really incredible global mega study looking at 60,000 participants from 63 different countries and testing 11 interventions that were all designed to promote action on climate change. Now, one of these messages was kind of a traditional doom and gloom message about how terrible climate change is and how bad everything's going to be. And at first glance, it looks like that message worked really well. It was one of the messages that people were most likely to share on social media. However, this doom and gloom message actually undermined people's willingness to take a more effortful form of action.