Today’s Solutions: December 19, 2025

In Haiti, where progress to rebuild after 2010 was painfully slow, a nonprofit developed a new process to build more efficiently. But it realized that the pace of traditional construction would always hamper its ability to address the global need for better housing. After analyzing various options to speed up construction and decrease costs—including prefab homes—the team realized that 3D printing could be a viable solution. Now the nonprofit has developed a machine that can build walls and floors by squirting layers of concrete and can finish a house in a day or less. Adding a conventional roof, windows, and utilities can be completed a day later. After testing the machine and creating a small, yet beautiful, home in Austin, the startup will now go to an unnamed location in South America to build a community of 3D-printed homes for families currently living in substandard, shack-like housing.

Solutions News Source Print this article
More of Today's Solutions

New method uses sound waves to map soil health, stop famine, and restore farm...

BY THE OPTIMIST DAILY EDITORIAL TEAM Across the world, soil scientists are trading in their shovels for something unexpected: seismic sensors. In a breakthrough ...

Read More

This simple 15-minute mindset exercise can ease anxiety, science shows

BY THE OPTIMIST DAILY EDITORIAL TEAM A growing body of research is revealing how a short, simple activity that is done in just 15 ...

Read More

3 habits of the happiest people

Think of the happiest people you know. Do you find yourself often wondering what they are doing to maintain a general level of joy? ...

Read More

Changemakers of the week: GRuB and SparkNJ

Every day on the Optimist Daily, we report on solutions from around the world. Though we love solutions big and small, the ones that ...

Read More