🏗️ Lesson 43: Megaprojects

A megaproject is a huge construction or infrastructure project: a dam, bridge, tunnel, railway, airport, canal, city, port, or energy system. Megaprojects can change how people live and move.

Large dams can create electricity, control floods, store water, and support irrigation. But they can also displace people, flood land, block fish migration, and change river ecosystems.

The Suez Canal, Panama Canal, Channel Tunnel, Gotthard Base Tunnel, and many subway systems show how humans cut through land or connect places that geography separated.

Some countries build new capitals or planned cities to reduce crowding, show ambition, or shift development. Examples include Brasilia, Canberra, Putrajaya, and Egypt's new administrative capital.

High-speed rail can shrink travel time between cities. Long bridges and tunnels can connect islands, bays, and regions, changing trade and commuting patterns.

Before building huge projects, people should ask: Who benefits? Who pays? Who is displaced? What happens to nature? What happens if the project fails?