Happy Wednesday 👋

Construction is essential to society for many reasons, including infrastructure development, housing, and disaster recovery.

Unfortunately, its environmental impact is heavy, accounting for roughly 37% of global emissions.

In an effort to make construction greener, scientists have developed a new type of building material… and it’s quite literally alive!

Powered by cyanobacteria, this material can create sturdy structures that also pull CO₂ directly from the air.

With this breakthrough, climate-smart architecture just took a massive leap forward!

Here are the impactful insights that I have for you today:

• How buildings can capture carbon from the air 🌆
• Advancing zero carbon air travel 🚁
• How water can make solar energy fully recyclable ☀️
• Discussion of the week: balancing hope and urgency 💬
• And more… 💚

🌆 Scientists Engineer A Living Building Material That Pulls CO₂ from the Air 

1️⃣ The big picture: In a remarkable fusion of biology, architecture, and materials science, researchers at ETH Zurich have developed a living, 3D-printable building material capable of actively capturing CO₂ from the air. This new “photosynthetic living material” is composed of a hydrogel infused with cyanobacteria—some of the planet’s oldest life forms—that harness sunlight to convert CO₂ into biomass and simultaneously trigger mineralization, effectively locking carbon away in a stable, solid form. Tests show it can sequester 26 milligrams of CO₂ per gram—a rate comparable to or better than other biological and chemical methods, including recycled concrete.

2️⃣ Why is this good news: Unlike many existing carbon sequestration technologies that rely on energy-intensive processes, this living material functions passively, requiring only sunlight, water, and nutrients to operate. Its design allows cyanobacteria to thrive for over a year, continually removing CO₂ from the atmosphere. Already, large-scale living structures made from this material have been exhibited in Venice and Milan, where installations absorb as much CO₂ as small trees. 

3️⃣ What’s next: While further development is needed before commercialization, this living material offers a compelling low-energy, high-impact alternative to traditional construction—and a glimpse into a more symbiotic relationship between the built environment and nature. Researchers envision a future where building materials actively contribute to climate solutions, turning walls and structures into functional, breathing carbon sinks.

📢 More Good News…

🪸 How a coral-inspired city can fight climate change:

• Researchers and developers are currently building the Maldives Floating City, a network of curving roads and canals that mimic the resilient, efficient patterns of brain coral in an attempt to blend urban development with marine ecosystems, integrating coral conservation into the city’s foundation.
• Engineered to withstand waves, sea-level rise, and extreme weather, the floating platforms are also ecological tools. Underwater, they host artificial coral reefs to regenerate marine life, while natural reefs serve as wave barriers that protect the city and boost biodiversity.
• More than a climate adaptation measure, this project is a bold statement redefining the Maldives’ global narrative—from a vulnerable island nation to a leader in climate innovation that blends practicality, beauty, and ecological respect.

🚁 Advancing zero carbon air travel:

• In a major milestone for sustainable aviation, Unither Bioelectronics successfully conducted the world’s first piloted flight of a hydrogen-powered helicopter.
• This historic flight proved that hydrogen fuel cells can meet the demanding energy needs of vertical takeoff and landing (VTOL) aircraft. The success is a crucial step toward zero-emission flight, especially for mission-critical applications like organ transport, which directly links to Unither’s biomedical work.
• Looking ahead, the project plans to integrate liquid hydrogen storage, which is more energy-dense than gaseous hydrogen and could dramatically extend flight range. If successful, this technology could make clean, long-distance rotorcraft operations feasible.

☀️ How water can make solar energy fully recyclable:

• Swedish scientists at Linköping University have developed an environmentally friendly breakthrough in solar energy: a water-based method to fully recycle high-efficiency perovskite solar cells, eliminating the need for toxic chemicals previously used in the process.
• The process involves heating the solution to 80°C (176°F), soaking the cells for 20 minutes, and then spinning them in a centrifuge. Remarkably, the recycled materials maintain the same energy efficiency as the original cells—meaning the same perovskite crystals can be reused multiple times without loss of performance.
•  With only 10% of solar panels globally being properly recycled today, this method could drastically improve recycling rates and reduce the need to mine new critical minerals, further lowering the carbon footprint of solar manufacturing.

💬 Discussion of the Week: Balancing Hope and Urgency

Welcome to our new section, where we spark meaningful discussions about everyday topics that can create a real positive impact in our lives!

This week’s discussion topic: How do you balance hope and urgency when working toward systemic change?

• What strategies help you stay motivated for long-term change while acknowledging current crises?
• How do you think maintaining hope while facing difficult realities affects our ability to create impact?
• Can you share approaches for sustaining activism and advocacy without burning out?

Your perspective could help us all find sustainable ways to work toward the changes our world needs!

For our founding community members, keep the conversation going in our forum here.

Want to join our community when we reopen? Just reply to this email—I’d love to personally add you to our waitlist so you’ll be the first to know all about it 💚

🤝 Important Awareness Events At a Glance

🧑‍🦽 July, Disability Pride Month:

• Disability Pride Month is about celebrating people with disabilities and their contributions to society while promoting acceptance and breaking down barriers. 
• It encourages the broader community to understand the importance of accessibility and inclusion in everyday life, from workplaces to public spaces. 
• It also brings attention to the ongoing need for policies and support that protect the rights and dignity of disabled individuals.

🥤July 3, International Plastic Bag Free Day: 

• International Plastic Bag Free Day is a movement urging the reduction or elimination of single-use plastic bags worldwide. 
• The event gathers non-profits, environmental groups, activists, and governments to hold public parades, advocate on the streets, and create engaging posters to raise awareness of the harms of plastic bags. 
• The observance also fights to educate the public through workshops, webinars, and social media posts to use durable and eco-friendly alternatives to plastic bags. 

🇺🇸 July 4, Fourth of July (Independence Day): 

• The Fourth of July, or Independence Day, marks the adoption of the Declaration of Independence on July 4, 1776, when the thirteen American colonies officially broke away from British rule. 
• It represents the birth of the United States as a sovereign nation and celebrates the country’s foundational ideals of liberty, democracy, and self-governance.

Related: You can discover all the 74 most important awareness events (for the month, days, weeks) in our awareness calendar for July 2025!

📜 These Days in History

✊ July 2, 1964: The Civil Rights Act was signed by Lyndon B Johnson. This act banned public discrimination on the basis of race, and provided for integration in places like schools, public transportation, and other public institutions.

🇺🇸 July 4, 1776: The Declaration of Independence was signed in Philadelphia. This was the official beginning of the US as an independent public. 

💭 Quote of the Day

“Yesterday is not ours to recover, but tomorrow is ours to win or to lose.”

― Lyndon B. Johnson; 36th president of the United States

Share the news with your friends to make a bigger positive impact on the world and society!

Stay impactful 💚