Carbon footprint

What Is a Carbon Footprint?

A carbon footprint is a way to see how much something adds to the air. It measures how much carbon dioxide and other gases that warm the Earth are made when we use things, make things, or travel.

Imagine you are baking cookies. The carbon footprint would be all the gases made from mixing ingredients, baking in the oven, and even how the ingredients were grown or made before you got them. This helps us see which things cause more warming than others.

Why It Matters

The world is getting warmer because people use things like coal, oil, and cut down forests. These actions add extra gases to the air that trap heat. Two big gases are carbon dioxide and methane. Because of these gases, Earth’s temperature is going up. International agreements like the Paris Agreement want to stop the temperature from rising too much.

By knowing the carbon footprint, we can choose things that hurt the climate less. For example, eating vegetables instead of meat or riding a bike instead of a car can make a big difference.

How We Measure It

People can measure carbon footprints for many things—products, companies, or even whole countries. Scientists turn all the greenhouse gases into one unit: tonnes of CO₂-equivalent. This makes it easy to compare.

For example, a cup of peas might have a small carbon footprint, while a steak might have a much bigger one. This helps us make better choices for our planet.