The four pillars of the Geneva Association are four different types of activities that help to protect the environment. The first pillar is research, which means studying and understanding how humans affect the environment. The second pillar is thinking ahead, which means making plans to avoid harm to the environment now and in the future. The third pillar is cooperation, which means working together with others to protect the environment. The last pillar is outreach, which means teaching people about the environment and how to take care of it. All four pillars are important for people to understand how to protect the environment.