Megatrends are major movements at a global scale likely to have a significant impact on the global economy, society, and ecology. Mega trends are composed of many correlated, mutually dependent trends. A megatrend is both the sum of trends and a guiding force since it influences its component trends. A megatrend impacts the evolution of these multiple trends, hence the importance of understanding mega trends. Trends are hard to predict, and megatrends are hard to recognize. Evolution is easier to observe at the trend level because it is more dynamic with more immediate results. However, the impact of megatrends is broader and larger.