Topic: Urbanization and Sustainability
By 2050, 68% of the world's population will live in urban areas according to UN
projections. Sustainable urban planning focuses on green spaces, public transit,
and energy-efficient buildings. Cities produce 70% of global CO2 emissions but also
drive innovation in sustainability solutions. Successful examples include
Copenhagen's carbon-neutral goal by 2025 and Singapore's vertical gardens that
reduce urban heat island effects.