Struggling with modern building costs? Learn the clay-to-sand ratio and tapering techniques used in Yemen to build towering, sustainable earth homes.

The towers of Shibam are proof that you don't need steel and glass to touch the sky—you just need a deep understanding of how to stack the earth so it supports its own weight.
Criado por ex-alunos da Universidade de Columbia em San Francisco
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
Criado por ex-alunos da Universidade de Columbia em San Francisco

Imagine standing before a eleven-story skyscraper made entirely of sun-baked mud, straw, and water. This is Shibam, the 500-year-old "Manhattan of the Desert," and today, you’re going to learn how to steal its ancient secrets for your own build. You’ll master the magic recipe of 15 to 30 percent clay mixed with sand to prevent cracking, and discover why these Yemeni towers use "sacrificial" lime plaster to breathe. We’re breaking down how to mold your own adobes and engineer walls that taper as they rise to defy gravity. Ready to turn local earth into a vertical fortress? Let’s dig in.