Today’s Solutions: December 19, 2025

A couple of years ago, The Optimist Daily wrote about a surprisingly positive outcome of the 1986 Chernobyl nuclear disaster in northern Ukraine— the rewilding of the territory.

As an update, we are happy to report that endangered animals are still thriving there, including the Przewalski’s horse, which for decades has been considered the last truly wild horse left in existence. In the 1970s the species was almost pronounced extinct, however now that humans have been absent from the area for 35 years, the Przewalski’s horse population, among other species, is free to flourish in this unexpected wild territory.

Fortunately for the wildlife that now lives undisturbed in the area around Chernobyl, Ukrainian authorities believe that the region will not be inhabitable by humans for another 24,000 years. In the meantime, Chernobyl offers a singular opportunity for researchers and scientists to conduct radioecological research and to study the conservation of biological diversity. The flourishing wildlife is a small silver lining in the wake of this tragic ecological disaster.

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