What-Are-Green-Skyscrapers?

Few structures are as synonymous with modern civilization as the skyscraper. The grandeur of these tall structures comes at a cost—buildings account for close to 40 percent of the world's greenhouse gas emissions.

While our tallest buildings take a heavy toll on the environment, they also offer opportunities for improvement. Today, green skyscrapers are transforming how cities worldwide address their ecological footprint. In many ways, they show our collective capability to adjust modern life for a more sustainable future. Here's a closer look at what makes a "green skyscraper" and why that matters in the world today.

What Makes a Skyscraper Green?

Skyscrapers are typically defined as buildings with multiple levels that reach at least 100-150 meters tall (usually with a minimum of 40-50 stories).

At first glance, "green" and "skyscraper" seem like an oxymoron. These gargantuan glass-sided buildings require immense amounts of resources for both construction and daily operation. The environmental cost of keeping them comfortable is significant alone, as air conditioning accounts for 14 percent of global energy use.

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