Quick climate dictionary: what actually is a carbon footprint?

By Anna Turns, Senior Environment Editor

A carbon footprint is the total amount of greenhouse gases emitted by something. That might be a person’s lifestyle, a product’s supply chain, an organisation, or an activity. Everything from a banana to a ship has a carbon footprint.

In simple terms, it equates to the environmental impact that someone or something has.

To begin with, this term referred to just the carbon dioxide (CO₂) emissions being released into the atmosphere. CO₂ is the most common greenhouse gas. But it’s not the only one. There are other gases that contribute substantially to climate change, such…

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