The document discusses the aging population trends in Europe. It notes that by 2025 over 20% of Europeans will be over 65 years old, with rapid growth in those over 80. Several European countries like Italy and Japan are more severely affected by aging populations, with issues like declining birth rates and increased life expectancies contributing to these trends. An aging population puts pressure on healthcare systems and pensions, and reduces the ratio of workers supporting retirees. The document discusses some options for governments to address aging populations, such as immigration, increasing retirement ages, and incentives for higher birth rates.