Energy Efficient

In 2018, a student in South Africa grew a solid brick from sand, bacteria, and human urine — at room temperature, with zero emissions. The science behind it has been confirmed by universities on five continents. So why have you never heard of it? In this video, Oracle Prime breaks down the proven science of biocementation: how bacteria turn loose sand into solid sandstone using the same chemistry that built Earth’s geology over two billion years. We trace the research from Cape Town to Stuttgart to Edinburgh, show you exactly how to test it yourself at home, and explain why this technology sits in academic journals instead of on hardware store shelves. This is not science fiction. This is biology doing what it has always done — we just forgot to watch.

Matt ferrel, 442,893 views Mar 24, 2026 What I Got Wrong Building my dream net zero energy home. I've been living here for a little over two years now, and so far, I’ve been more than satisfied. I have enough solar and battery storage to balance out all of my annual energy use. A highly efficient geothermal heating and cooling system supplies me with hot water for almost no money. And this is the most comfortable and energy efficient home I've ever lived in. Overall, I absolutely love this house. But even the best laid plans have issues, and mine were no different. If you want to avoid expensive mistakes, learn what actually works in a net zero home, or just see what tech lived up to the hype, there might be some lessons you can learn from the choices I made … and the ones that I didn't make.

• Black water bottles or black board/floor to absorb sun.
• Plastic sealed to window with gap to act as storm window. $8 per window per year to save ... on heating bill.
• Construction 2" thick, fit to window for use at nightime. (A four-by-eight sheet of silver-faced polyisocyanurate foam board for night insulation costs about fifteen dollars and covers two large windows.)
• Reflector outside below window to reflect light through window.
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