Urban Ecosystems

Cities might seem like they are only about buildings and roads, but they are ecosystems too. Parks, gardens, rivers, and even rooftops are home to plants and animals. Urban ecosystems include all the living things that share our cities. Making cities greener helps both people and wildlife.

Nature in the City

Many animals have learned to live in cities. Pigeons, squirrels, and raccoons are common city animals. Hawks sometimes nest on tall buildings. City parks give birds and insects a place to find food and shelter. Even a small garden or a few potted plants can help city wildlife.

Green Cities

Cities are finding new ways to bring nature back. Green roofs are covered with plants that help cool buildings. Tree-lined streets provide shade and clean the air. Community gardens give people a place to grow food. Rain gardens help soak up storm water and prevent flooding.

Fun Facts

• New York City's Central Park is home to more than 200 species of birds!
• Green roofs can lower a building's temperature by up to 40 degrees in summer.
• Singapore is known as the Garden City because it has trees and plants everywhere.

Did You Know?

More than half of all people on Earth now live in cities, so making urban ecosystems healthy is more important than ever!