 Sports fans are often receptive and even partake in teams' efforts to reduce their environmental footprint when attending games research shows. Dr. Brian McCullough of Texas A&M University, who studies sports management, found that effectively designed campaigns can encourage fans to use mass transit, reduce waste, recycle more and purchase carbon offsets to mitigate the impact of traveling to an event. There are also signs that they adopt these behaviors into their daily lives and communities. His studies also found that sustainability programs such as energy audits and investments in renewable energy can result in financial returns for the team. Environmentally-minded fans can deepen their engagement with the team as well. Many sports teams lack upper management support for sustainability initiatives, but sports events around the world will be disrupted by the changing climate and extreme weather such as flooding or lack of snow and by sea level rise.