Today’s Solutions: September 15, 2026

Circularity

Understanding the value of a circular economy and identifying circular solutions are essential to changing our world for good. Circularity, or the zero-waste principle of keeping materials in a closed loop and away from landfills and incinerators, is the future. Find out about the latest innovations and solutions accelerating the transition towards a circular economy in the articles here from The Optimist Daily.

Close-up of carbon fiber texture with three curved, overlapping ribbons.

Elementic's MO6 is the building material claiming to lock away carbon for thousands of years

BY THE OPTIMIST DAILY EDITORIAL TEAM Lignin is the part of wood that paper mills and timber companies tend to get rid of. It comes off as a byproduct when wood is processed, resists most conventional uses, and usually ends up burned for energy. A Finnish materials startup called Elementic Read More...

Dense green Amazon rainforest canopy photographed from above

How Colombia's outgoing president protected 42% of the country's Amazon from mining

BY THE OPTIMIST DAILY EDITORIAL TEAM On August 4, 2026, three days before he left office, Colombian President Gustavo Petro signed a resolution placing 186,500 square miles of the Amazon off-limits to any new extraction. That means no new mining concessions, no new oil or gas contracts, and no Read More...

Climate attribution data shows fossil fuel company emissions are linked to specific extreme weather events and climate disasters

Climate attribution science just changed the rules for fossil fuel lawsuits

BY THE OPTIMIST DAILY EDITORIAL TEAM Scientists can now draw a straight line from a single oil company's emissions to a specific disaster. Not a rough estimate of the industry's overall contribution, but a specific company, a specific event, a specific percentage. That's what a new Read More...

Balloon floating in air representing the UK's new biodegradable balloon alternative to traditional latex party balloons

Meet the Bioloon: the biodegradable balloon aiming for shelves by 2028

BY THE OPTIMIST DAILY EDITORIAL TEAM Balloons have always been made from natural latex, a material derived from rubber tree sap. Natural latex is biodegradable. The rubber tree has been producing it since before the first balloon was invented in 1824. On its own, it breaks down. The problem is Read More...

6 useful things to donate befo

6 useful things to donate before back-to-school season this year

BY THE OPTIMIST DAILY EDITORIAL TEAM Back-to-school season is a great time to donate. Kids have outgrown things. Backpacks didn't survive the year. Notebooks never got opened. Most of it ends up in the trash, and a smaller portion ends up at Goodwill, where it's gone in days. "The school year Read More...

Large solar panel array at sunset representing global solar capacity crossing the 3-terawatt milestone in 2026, a clean energy record

The world hit 3 terawatts of solar power faster than anyone predicted

BY THE OPTIMIST DAILY EDITORIAL TEAM The first terawatt of global solar capacity took nearly 68 years to reach. The second arrived in roughly two years. The third came in 19 months. The world crossed the 3-terawatt mark in early 2026, and the pace is still picking up. In 2025 alone, the world Read More...

Represenative image: Restored Sahel savanna in Niger showing green vegetation growing from natural root systems through Farmer Managed Natural Regeneration

How Niger restored 5 million hectares without planting a single tree

BY THE OPTIMIST DAILY EDITORIAL TEAM In 1983, an Australian agricultural adviser named Tony Rinaudo was working in the Sahel when he noticed something that didn't fit the picture everyone had of the region. The land looked barren. But beneath the depleted soil, root systems were still alive. Read More...

Close-up of orange coral-like fungus with slender, curling tendrils emerging from a mottled base against a black background.

The biodegradable, self-cleaning fabric made from living caterpillar fungus

BY THE OPTIMIST DAILY EDITORIAL TEAM The sustainable fashion industry has spent years trying to reduce harm: less water, fewer synthetic chemicals, more recycled material. A research team at the Shenzhen Institutes of Advanced Technology went in a different direction. They grew the fabric from a Read More...

Desert solar thermal plant with hundreds of heliostat mirrors surrounding a tall central receiver tower.

From molten salt to liquid air: clean energy’s weird storage revolution

BY THE OPTIMIST DAILY EDITORIAL TEAM There’s something strange about where the clean energy transition has gotten stuck. Generating power from the sun and wind? Mostly figured out. Storing it? That’s the part nobody has fully solved. When the sun sets and the wind drops, whatever energy Read More...

Clothing racks in a store display with green and floral dresses on hangers.

Fashion’s dirty secret: the EU just banned brands from incinerating unsold clothes

BY THE OPTIMIST DAILY EDITORIAL TEAM Large fashion companies in the EU can no longer destroy unsold clothing, shoes, or accessories. As of this week, that’s illegal. The change is part of the EU’s Ecodesign for Sustainable Products Regulation, which applies to companies with more than 250 Read More...