Some people love 'em, and some folks hate 'em. But the ADA law requires truncated domes as a safety and accessibility feature in public access properties. And then there's Mike, who insists that truncated domes are...funny.
Often we are asked if truncated domes can be used as a deterrent to skateboarders. Well, truncated domes were not designed for that purpose. We doubt they would be effective. Then we came across a video that answers the question.
Tracking a Haitian cholera outbreak, she describes how a lack of street addresses can be a matter of life or death. She points out that “about 70 percent of the world is insufficiently mapped, including many cities with more than a million people.” Adding that these are usually the planet’s poorest places, she quotes a Brazilian scientist who studied snake venom and observed, “Where there are snakes, there are no statistics; and where there are statistics, there are no snakes.”
For centuries, builders have been making concrete roughly the same way: by mixing hard materials like sand with various binders, and hoping it stays fixed and rigid for a long time to come.
Now, an interdisciplinary team of researchers at the University of Colorado, Boulder, has created a rather different kind of concrete — one that is alive and can even reproduce.
The cement industry produces more CO2 emissions than most countries. It may not survive. Investors worried about climate change are warning the world's biggest cement producers to reduce their emissions or face extinction.