High Rises Are Not High Density - Metropolis

Housing Density: From Tenements to Towers at the Skyscraper Museum shows how New York City became de-densified.

From Slums to Sky Gardens – Singapore's Public Housing Success – The Field

Skyscrapers higher and higher - List of Tallest Skyscrapers High-rise Buildings in the World

Sustainability, Free Full-Text

Sao Paulo, History, Population, & Facts

Super-tall, super-skinny, super-expensive: the 'pencil towers' of New York's super-rich, Cities

Why Doesn't New York Construct the World's Tallest Building Anymore? - Building the Skyline

Housing deficit makes “vertical isolation” impossible, Brazilian researchers say

Green Architecture: How Our Cities Are Getting in Touch with Nature

Skyscraper, Definition, Building, History, & Facts

What's the Difference Between a Megacity, a Metropolis, a Megalopolis and a Global City?

Why Efficient Skyscrapers Will Be Essential To Cope With Growing Urban Populations

ZN Era proposes encircling Burj Khalifa with continuous metropolis

High Density Housing: What Is It & How Does It Affect Multifamily?

New York City is sinking due to weight of its skyscrapers, new research finds, New York

Do You Want to Buy a House in Canada? Not So Fast. - The New York Times