Today’s Solutions: December 20, 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.

India’s tiger population gro

India’s tiger population grows by one third in only four years

Nine years ago, India sought to double its tiger population by 2022. But on International Tiger Day, the country announced it met its goal four years earlier than expected. Through assiduous conservation efforts, India is now home to nearly 3,000 tigers, a third more than it had four years ago, Read More...

Ethiopians break records by pl

Ethiopians break records by planting more than 350m trees in one single day

Earlier this year, Ethiopia’s Prime Minister officially launched an ambitious initiative aiming at restoring the country’s landscape, which experts say is fast being eroded by deforestation and climate change. The campaign entails planting an astounding 4 billion trees by the end of the Read More...

Scientists are demanding a fif

Scientists are demanding a fifth Geneva Convention to protect nature from war

When we think of war crimes, we typically think of actions like taking hostages, torturing prisoners, or enlisting child soldiers. Now a group of scientists wants to add another item to that list: harming the environment. An open letter signed by 24 prominent scientists from around the world Read More...

This is what happened when Mad

This is what happened when Madrid’s new government tried repealing the car ban

When Madrid’s new administration came to power this past May, it seemed European city car bans were in peril. It’s become somewhat of a trend to ban cars from major city centers in Europe, but the city’s new government promised to scrap the law that had seen almost all private cars disappear Read More...

New Zealand’s rarest bird is

New Zealand’s rarest bird is having its best breeding season in decades

The kākāriki karaka, also known as the orange-fronted parakeet, is New Zealand’s rarest mainland forest bird. Around the world, it was estimated that the population of this critically endangered species ranged between 100-300. But this breeding season has apparently been the most the fruitful Read More...

Berkeley becomes the first cit

Berkeley becomes the first city in America to ban natural gas in new buildings

For decades, natural gas was considered among the preferred energy sources for buildings and embraced as a bridge from dirtier fossil fuels to a green energy future. Now it seems that the transition period is coming to a close after the city of Berkeley passed a landmark ordinance that will ban Read More...

These beautiful wooden shutter

These beautiful wooden shutters move with the sun to keep homes cool

There was a time where the shutters on American homes were actually used to keep houses cool. These days, however, shutters tend to be decorations without a function. But as we look for ways to keep homes cool without blasting the air conditioning, it seems home designers are returning to more Read More...

How food-spattered plastic was

How food-spattered plastic waste could soon heat homes in the UK

When plastic waste is spattered with scraps of food, recycling it becomes impossible. But that could soon change after a group of scientists in the UK have discovered a way to use dirty plastic waste to produce hydrogen, which can heat homes and fuel cars without producing greenhouse gas emissions. Read More...

Giant UK hospitality business

Giant UK hospitality business to stop handing out wasteful receipts to its customers

Every year, British retailers hand out 11.2 billion receipts -- that’s 7300 tons of paper -- at a cost of nearly $40 million. Most of these receipts end up in the landfill because they cannot be recycled as a result of them being printed on shiny paper and containing other substances. In a bid Read More...

With its “virtual” power p

With its “virtual” power plant, Oakland looks set to move away from fossil fuels

When the demand for electricity surges in Oakland, California, a power plant burning jet fuel switches on, pumping pollution into the western part of the city. But the plant will soon close—and will be replaced in part by a network of solar panels and batteries installed in affordable apartment Read More...