Today’s Solutions: April 22, 2026

The human gut is home to bacteria, viruses, fungi, and small worms in some parts of the world. While the average person’s body contains 30 to 40 trillion human cells, bacteria add another 38 million to this number.

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Germany’s coal mines are now Europe’s largest lake district

BY THE OPTIMIST DAILY EDITORIAL TEAM When the last miners left the open-cast lignite pits of eastern Germany’s Lusatia region, they left behind craters ...

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The sensory superpower that lets seals hunt in total darkness

BY THE OPTIMIST DAILY EDITORIAL TEAM When a fish moves through water, it doesn’t simply pass through and vanish. It leaves a trail of ...

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AI helps restore Rembrandt masterpiece that was disfigured 300 years ago

In 1715, three-quarters of a century after Rembrandt painted it, The Night Watch was greatly disfigured when it was moved from its original location ...

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A new way to stack bricks could help clean Bangladesh’s air

BY THE OPTIMIST DAILY EDITORIAL TEAM In the cool, dry winters of Bangladesh, the country’s 8,000-plus brick kilns roar to life. Coal-fed and open-air, ...

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