Today’s Solutions: December 19, 2025

From the return of sails on cargo ships to shipping giant Maersk’s quest to drastically reduce emissions, the shipping industry has been in the spotlight this week at The Optimist Daily—and for good reason: as one of the highest polluting industries in the world, much has to change in order to reach the targets set forth by the Paris Agreement. And while many of the new technologies that will clean up the shipping industry are still years away from being invented, there’s one thing that should dramatically reduce emissions starting January 1, 2020.

That’s because, on that date, the shipping industry will have to comply with rules designed by the International Maritime Organization (IMO) to significantly curb pollution produced by the world’s ships. Amid a broader push towards cleaner energy markets, the IMO is set to ban shipping vessels using fuel with a sulfur content higher than 0.5%, compared to levels of 3.5% at present.

Currently, the most commonly used marine fuel is thought to have a sulfur content of around 2.7%. This is a huge deal given that sulfur is a major component of acid rain, which harms vegetation and wildlife, and contributes to the acidification of the oceans.

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