Today’s Solutions: April 26, 2026

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.

Recycling is finally becoming

Recycling is finally becoming circular thanks to artificial intelligence

The problem that has long plagued recycling is that too many different kinds of waste are mixed together, which needs to be accurately sorted out in order for recycling to be effective. But thanks to new artificial intelligence, we have a revolutionary solution to the problem of sorting Read More...

To prevent algorithmic bias, N

To prevent algorithmic bias, NYC has created a position to oversee ethics in AI

New York Mayor Bill de Blasio has taken a major step forward in ensuring that the city’s AI systems are fair and bias-free after creating a position dedicated entirely to overseeing the ethics of AI and other algorithms. AI systems are based on data, but the problem is bad data can contain Read More...

The tech from self-driving car

The tech from self-driving cars could help prevent wildfires in the future

Last year, California had its most destructive and deadliest wildfire year on record. Increasingly dry, warm, and windy weather conditions wrought by climate change are a big reason why. But the immediate cause is often power lines: Downed lines that come into contact with nearby trees can create Read More...

Hedonistic sustainability: thi

Hedonistic sustainability: this clean energy plant doubles as a ski slope

How do you make a waste-to-energy plant a more appealing proposition to the public? How about putting an artificial ski slope on top of it? In Copenhagen, Denmark, city officials recently opened the “cleanest waste-to-energy power plant in the world”, capable of converting 440,000 tons of Read More...

Mexico’s 3D-printed neighbor

Mexico’s 3D-printed neighborhood for impoverished families is coming to life

On May 13th of this year, the top story of the Optimist Daily was about a nonprofit called New Story that had plans to build the world’s first 3D-printed neighborhood for poor people in Latin America. Well, we’re excited to tell you that the first homes of this neighborhood have been Read More...

This startup is building post-

This startup is building post-disaster housing using a giant assembly line

After two of the worst fires in California’s history tore through the state in the last three years, a housing startup by the name of FactoryOS knew it had to do something. The homes of thousands were incinerated by the flames of the fire, and the people who used to live in those homes were still Read More...

The beautiful design of vertic

The beautiful design of vertical forests is spreading to cities across the globe

The forest and the city may seem like opposites, but what if our architecture could meld our cities with our natural spaces? This is what architect Stefano Boeri’s vertical forest attempts to do. His prototype in Milan features two residential buildings with 20,000 trees, shrubs and plants. Read More...

North Miami is creating a park

North Miami is creating a park that doubles as a tool for flood prevention

There is no state that is more aware of the potential threats that the climate crisis poses than Florida. In particular, flash floods and rising sea levels could potentially leave millions at risk. Fortunately, urban designers are starting to plan ahead before disaster strikes. In North Miami, the Read More...

This London building has the w

This London building has the world's largest living wall

For some time already, climate scientists have highlighted that our built environment has the potential to help mitigate climate change, support adaptation, and improve public health. The general idea is that the way we design and develop our cities can have a long-lasting positive impact on the Read More...

Red alert: How Extinction Rebe

Red alert: How Extinction Rebellion woke the world up to the climate crisis

In October, the journalist and activist George Monbiot introduced Extinction Rebellion to the British press as a homegrown movement  “devoted to disruptive, non-violent disobedience in protest against ecological collapse”. The hope was to turn a national uprising into an international one by Read More...