Where Does Climate Change Come From?

Experts and scientists agree that human activities contribute to climate change. When we burn coal, oil and natural gas to fuel factories, power automobiles and run our homes, workplaces and schools, we add carbon dioxide to the atmosphere. Other greenhouse gases produced by people include nitrous oxide (discharged from sewage treatment plants and fertilizers used to grow crops) and methane (emitted when vegetation rots, burns or is digested by animals). For example, when forests are chopped down and when wetlands are transformed into parking lots, housing developments or shopping centres, we prevent plants from absorbing greenhouse gases and keeping the planet's climatic systems in balance.

 (Source: Energy Information Center)