Today’s Solutions: December 19, 2025

Environment

Need some good news about the environment? The Optimist Daily is your go-to herald of positive environmental news, highlighting eco-friendly solutions and scientific progress around climate action, circularity, conservation, and more. Learn about everything eco in our Environment section.

Notre Dame floor

Treasures discovered beneath Notre Dame during reconstruction

The 2019 Notre Dame fire was felt by many around the world. The medieval cathedral was an iconic Parisian landmark that visitors came from many countries to see, and its loss was taken to heart by the French people. President Emmanuel Macron pledged to return Notre Dame to the world and have it Read More...

New York City water

New York City makes plans to become “spongier”

Cities evolve. They expand to accommodate growing populations. They alter their infrastructure for new technologies, such as automobiles and trolleys. Today, we even see cities like London, Paris, and Berlin moving traffic away from their city centers, and some are making changes to become sponge Read More...

Broken plastic electric kettle with crack on the side

Self-repairing plastic soon to become reality thanks to Japanese scientists

The future of better plastics is here! A team of researchers in Japan has developed a type of plastic that can repair itself. It could be used in smartphones, cars, and many other applications, reducing the amount of plastic that ends up discarded and polluting the environment. Repairing Read More...

California Freeways

California unveils strategy to take gas-powered cars off the road

California is well-known for frustrating traffic gridlock and making green leaps forward. With growing wildfires, Californians know too well the importance of switching to renewable energy and electrical cars, and it’s with this in mind that the state’s taken on its newest Read More...

Honey and wooden dipper isolated on white background.

Honey: the sweet solution for brain-like computers

It turns out that honey is much more than just a tasty addition to your tea. Engineers from Washington State University have reimagined the use of the sticky substance in brain-like neuromorphic computers. These systems are designed to mimic the human brain, where biological structures are replaced Read More...

Solar Panel Manufacturing

Researchers use new AI to advance solar cell manufacturing

Solar energy is becoming more affordable and easier to produce every day. As the market grows, so too is the field of research. Solar scientists have been working with perovskites, a family of mineral and ceramic materials that are a top contender to replace silicon as the next level up in Read More...

This innovative mesh fabric pr

This innovative mesh fabric protects crops from even the tiniest insects

Farmers who don’t use insecticides sometimes opt for mesh fabric instead to protect their crops from annoying pests. To make sure that enough sunlight and water reach the crops, the farmers often use meshes with relatively large holes that smaller insects can slip through to get to crops. Thanks Read More...

Nuevo Laredo and Laredo city on a map

Sister Cities along Mexico-US border to construct a binational eco-park

The border towns of Laredo, Texas, and Nuevo Laredo, Tamaulipas, Mexico, also known as the “Sister Cities,” are working together on a bold project: a binational river park to be developed where there was going to be a concrete and steel border wall. The plan to construct the wall (which Read More...

Close up photograph of an oval-squid in front of a blue background.

For the first time, scientists have recorded squids' camouflage abilities

Octopus and cuttlefish are known for their impressive ability to camouflage into their surroundings, changing the color of their skin to escape their predators and catch unsuspecting prey. Squids are cephalopods like octopus and cuttlefish, so one could assume they can camouflage too. However, Read More...

This MIT team designed a deser

This MIT team designed a desert shelter for humans and animals

We have often written about animal agencies at The Optimist Daily and sharing our space on the planet with our furry or winged neighbors. It’s important to recognize the rights of nature and cohabitate with animals as peacefully as possible, but a design team from MIT just took it to the next Read More...