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Michael Andersen

What the web really costs, in carbon, water, and care. Weekly essays on digital sustainability and building a business on values, from the author of Sustainable Web Design In 20 Lessons.

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Chapter Three, Three Years Later

What I would not write the same way today, what I have learned about choosing a host since the book came out, and why the methodology matters more than the names.

Lesson 16 - Sustainable Web Design In 20 Lessons

The entire 16th chapter of the book Sustainable Web Design In 20 Lessons.

The water behind the website

Finally I am getting confirmed there’s more than just CO2 to a website.

Lesson 15 - Sustainable Web Design In 20 Lessons

The entire 15th chapter of the book Sustainable Web Design In 20 Lessons.

Chapter Two, Three Years Later

What measuring a website’s carbon footprint really teaches you, why precision was never the point, and how I learned to sell sustainability to people who do not care about it

Lesson 14 - Sustainable Web Design In 20 Lessons

The entire 14th chapter of the book Sustainable Web Design In 20 Lessons.

The cost of AI that never shows up on the invoice

A new report finally puts real numbers to what AI actually uses, including the part of the cost that never reaches your invoice.

Lesson 13 - Sustainable Web Design In 20 Lessons

The entire 13th chapter of the book Sustainable Web Design In 20 Lessons.

Chapter One, Three Years Later

What I got right in the first chapter of Sustainable Web Design In 20 Lessons, what sharpened with experience, and what the industry is still refusing to face in 2026

Lesson 12 - Sustainable Web Design In 20 Lessons

The entire 12th chapter of the book Sustainable Web Design In 20 Lessons.