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How Bad Are Bananas?

The Carbon Footprint of Everything

By Mike Berners-Lee
16-minute read
Audio available
How Bad Are Bananas?: The Carbon Footprint of Everything by Mike Berners-Lee

In How Bad are Bananas? (2010), author Mike Berner-Lee provides readers with an A-to-Z guide of how they can start living a more environmentally conscious life and reduce their own carbon footprint. You may think you’re familiar with climate change and carbon footprints, but do you really know the everyday activities that contribute to the current environmental crisis? From grocery shopping to washing your clothes, you’ll learn how to be more efficient and less wasteful.

  • Anyone curious about their own carbon footprint
  • Environmentalists in the fight against global warming
  • Consumers who want to make more informed purchases

Mike Berners-Lee is a professor at Lancaster University and the founding director of Small World Consulting, a company that specializes in measuring the carbon footprint of services and products worldwide. He is also the author of The Burning Question: We Can't Burn Half the World's Oil, Coal and Gas. So How Do We Quit? (2013) and a frequent contributor to the Guardian.

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How Bad Are Bananas?

The Carbon Footprint of Everything

By Mike Berners-Lee
  • Read in 16 minutes
  • Audio & text available
  • Contains 10 key ideas
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How Bad Are Bananas?: The Carbon Footprint of Everything by Mike Berners-Lee
Synopsis

In How Bad are Bananas? (2010), author Mike Berner-Lee provides readers with an A-to-Z guide of how they can start living a more environmentally conscious life and reduce their own carbon footprint. You may think you’re familiar with climate change and carbon footprints, but do you really know the everyday activities that contribute to the current environmental crisis? From grocery shopping to washing your clothes, you’ll learn how to be more efficient and less wasteful.

Key idea 1 of 10

A carbon footprint takes into consideration many harmful gases, and the average size varies around the world.

These days, you don’t have to be an environmental scientist to have heard the term carbon footprint. It gets used a lot in discussions about global warming or climate change and refers to the amount of carbon dioxide (CO₂) that gets released during certain processes, whether by a corporation or just one person.

However, carbon dioxide is but one of many gases that contribute to global warming and a carbon footprint. Such harmful emissions are known as greenhouse gases and some of them are far more damaging than CO₂. Methane (CH₄), for example, is twenty-five times as harmful as CO₂, and nitrous oxide (N₂O) is three hundred times worse. And then there are refrigerant gases, which are used in cooling systems and can be several thousand times more potent than CO₂.

In the United Kingdom, CO₂ accounts for 86 percent of its greenhouse gas output, while methane accounts for 7 percent, nitrous oxide 6 percent and refrigerant gases 1 percent.

Since we know how potent all these other gases are in relation to CO₂, a carbon footprint provides an accurate reading on all the major harmful emissions being released. This conversion method is known as carbon dioxide equivalent, or CO₂e.

The average size of a carbon footprint varies from country to country, but it tends to be bigger in the developed world. In Malawi, for example, the average carbon footprint of a person is around 0.1 metric tons of CO₂e per year. The average person in the United Kingdom, however, measures up at around 15 metric tons per year, while the average North American comes in at around 28, and Australians at 30 metric tons. As for the planet as a whole, in 2007 we produced around 49 billion metric tons of CO₂e.

Being British, the author hopes to help the United Kingdom reduce harmful emissions by a significant yet reasonable amount. Berners-Lee has laid the groundwork for such a reduction through what he calls the 10-tonne lifestyle, which would result in the average person going from 15 to 10 metric tons per year – a one-third reduction of each person’s carbon footprint.

In the blinks that follow, we’ll take a closer look at the steps you can take to adopt this lifestyle.

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