Are Biodegradable Plastics Truly Eco-Friendly? Unpacking the Facts for a Sustainable Future

October 27, 2024 / activist360

Impact Characterization of Biodegradable Plastics
Credit: Piao, Z., Boakye, A. A. A., & Yao, Y. (2024). Environmental impacts of biodegradable microplastics. Nature Chemical Engineering, 1, 661–669.

When you hear the word “biodegradable,” what comes to mind? Many of us assume biodegradable plastics are a perfect solution for reducing plastic pollution. However, these materials have complex environmental impacts that aren’t immediately obvious. While they can help reduce certain types of pollution, they also come with hidden trade-offs, including greenhouse gas emissions that contribute to climate change.

In this article, we’ll dive into the environmental impacts of biodegradable plastics, explain how Life Cycle Impact Assessment (LCIA) helps scientists understand their effects, and offer tips for more eco-friendly choices.

What Are Biodegradable Plastics?

Biodegradable plastics are materials designed to break down in the environment faster than traditional plastics. They are typically made from renewable resources, like corn starch or sugarcane, or from fossil-based sources. Common types include plant-based PLA (polylactic acid) and fossil-based PCL (polycaprolactone).

To fully understand their impact, scientists use a process called Life Cycle Impact Assessment (LCIA). LCIA evaluates a product’s environmental footprint across its entire life cycle—from production to disposal. This is essential for understanding biodegradable plastics’ real impact on our planet, including factors like greenhouse gas emissions, water pollution, and waste management challenges.

Benefits of Biodegradable Plastics in Reducing Microplastic Pollution

One of the most significant benefits of biodegradable plastics is their potential to reduce microplastic pollution. Microplastics are tiny plastic fragments that pollute our oceans, rivers, and even our food and water. Because they don’t easily decompose, they accumulate in ecosystems and can harm wildlife and human health.

Biodegradable plastics offer a promising alternative. When they break down properly, they are less likely to form these harmful microplastics. Scientists assess this potential benefit through a measure in LCIA called aquatic ecotoxicity, which looks at how materials impact aquatic life. Biodegradable plastics typically score lower in aquatic ecotoxicity than traditional plastics because they break down more completely, reducing the risk of long-term pollution.

Think of biodegradable plastics like “biodegradable litter.” If disposed of properly, they disappear without leaving a trace, unlike conventional plastics that break into microplastics and linger in the environment for years.

The schematic diagram of the LCA methodology for biodegradable plastics

Hidden Costs of Biodegradable Plastics: Greenhouse Gas Emissions

While biodegradable plastics can reduce visible pollution, they aren’t without environmental costs. As these plastics break down, particularly in natural environments like rivers or forests, they can release greenhouse gases (GHGs) like methane—a potent contributor to climate change.

Here’s a surprising statistic: when PCL, a common biodegradable plastic, breaks down in a natural setting, it can emit up to 16.3 kilograms of CO₂-equivalent per kilogram of plastic. This emission rate is about 16 times higher than what it would release in an industrial composting facility.

Scientists use Global Warming Potential (GWP) within LCIA to measure how much a material contributes to climate change. For biodegradable plastics, scientists often use dynamic GWP calculations, which track greenhouse gas emissions over time rather than assuming a constant rate. This approach reveals that biodegradable plastics can emit GHGs in bursts as they break down, especially under anaerobic (low-oxygen) conditions in natural environments.

In some scenarios, biodegradable plastics that aren’t properly managed may actually emit more greenhouse gases than traditional plastics.

Role of Waste Management in Reducing Environmental Impact

The environmental impact of biodegradable plastics depends heavily on how they are disposed of. Ideally, they should be processed in industrial composting facilities, where conditions like temperature and oxygen are carefully controlled to allow these plastics to break down quickly and with minimal greenhouse gas emissions.

However, when biodegradable plastics end up in natural environments, such as lakes or soil, they break down under uncontrolled conditions, leading to increased emissions.

Think of biodegradable plastics as “biodegradable litter.” Just as litter remains litter if tossed on the ground, biodegradable plastics can still pollute if not disposed of correctly.

This brings us to the End-of-Life (EoL) Impact stage in LCIA. LCIA considers the full “end-of-life” cycle of a product to evaluate its environmental footprint based on where it ends up. Without the proper disposal infrastructure, biodegradable plastics may add to environmental pollution rather than reduce it.

What the Future Holds for Biodegradable Plastics

As scientists learn more about the impacts of biodegradable plastics, they’re working to design materials that minimize environmental costs. Using tools like LCIA, researchers can adjust physical properties—such as density, degradation rates, and carbon content—so that biodegradable plastics break down with lower greenhouse gas emissions and reduced aquatic toxicity.

LCIA helps scientists make informed design choices that balance eco-friendliness with practicality. For instance, certain plastics might be designed with an optimized Specific Surface Degradation Rate (SSDR), which controls the rate at which they break down in nature. This helps reduce greenhouse gas emissions while ensuring the plastic still decomposes efficiently.

Think of it like a “recipe” for future plastics. Each ingredient—density, degradation rate, carbon content—needs to be carefully balanced to create a plastic that’s both sustainable and functional. Just as a recipe requires precision for the best result, so does the design of biodegradable plastics.

With LCIA as a guide, scientists and manufacturers can develop low-carbon biodegradable plastics that help protect the planet by reducing pollution and managing emissions.

What Can We Do to Make a Difference?

As consumers, we have a role to play in reducing plastic pollution and supporting sustainable materials. Here are some ways we can contribute:

Mindful Consumption: Choose products with minimal packaging and support companies that use sustainable materials.
Proper Disposal: Make sure biodegradable plastics go into the correct waste streams. Check local composting and recycling guidelines to see if your area has facilities for biodegradable plastics.
Spread the Word: Share this information with friends and family. Understanding the pros and cons of biodegradable plastics helps everyone make more informed, eco-friendly choices.

Summing Up

Biodegradable plastics are a promising step toward reducing plastic pollution, but they also come with their own environmental costs, especially when they end up in natural environments. Through Life Cycle Impact Assessment (LCIA), scientists help us understand these trade-offs, from reducing microplastic pollution to the hidden impacts of greenhouse gas emissions.

Ultimately, while biodegradable plastics offer benefits, they are only part of the solution. Proper disposal methods, innovative material design, and mindful consumer choices are essential to building a sustainable future for our planet.

Source: Piao, Z., Boakye, A. A. A., & Yao, Y. (2024). Environmental impacts of biodegradable microplastics. Nature Chemical Engineering, 1, 661–669. https://doi.org/10.1038/s44286-024-00127-0

The Wisdom of Trees

October 6, 2024 / activist360

Lessons for Our Lives and Our Planet

Trees have a lot to teach us, if only we take a moment to listen to their quiet wisdom. They aren’t just standing silently in the background; they are alive with a purpose, vibrant, and deeply interconnected. By observing how trees live, grow, and thrive together, we can learn lessons that can enrich our own lives and strengthen our communities.

Embrace Interconnectedness

A forest is not just a collection of individual trees—it’s a living, breathing community, dependent on collaboration and connection. The mycorrhizal networks linking tree roots remind us that our strength lies in our connections. By embracing this interconnectedness, we grow stronger together, more capable of weathering life’s challenges.

Share Nutrients to Help Each Other Grow

Beneath the forest floor lies a marvelous network of fungal filaments called mycorrhiza. This hidden web allows trees to share nutrients, send signals, and even warn one another of dangers. Just as trees use these networks to nourish and protect their community, we too can share uplifting knowledge, resources, and support so we make humanity stronger, more purposeful, and abundant for all.

Provide Mutual Support

Trees form partnerships, sometimes even across species. For instance, Douglas Firs and Birches often share resources, helping each other flourish. This cooperation allows diverse species to coexist—a reminder to us that we are stronger when we support those around us, especially those who may seem different from us. Our differences, like those of the forest, make us richer and more resilient.

Send Signals and Respond

Trees are constantly communicating through chemical, hormonal, and even electrical signals. When under attack by caterpillars, some trees release pheromones that attract parasitic wasps to help eliminate the threat. Pine trees send healing sap when wounded. Nature shows us that it’s crucial to reach out when we need help, but also to respond when others need us—community thrives when others listen and lend a hand. Likewise, we must share with our friends and loved ones the urgency of protecting our climate. In addition, Project 2025 poses a significant threat to environmental protections, and it’s critical that we raise awareness about the potential harms it could bring to our planet.

Heed Warning Systems

Trees are proactive in warning each other of danger. When a giraffe begins feeding on an acacia tree, that tree releases ethylene gas, signaling nearby trees to produce bitter tannins that ward off herbivores. In our own lives, sharing information and protecting one another can make our communities safer and more resilient, just as the trees work together to guard against threats.

Nurture the Next Generation

Older trees, called “Mother Trees,” are the foundation of a healthy forest. They share nutrients with younger or struggling trees, ensuring the forest continues to thrive. When Mother Trees are removed, the entire ecosystem can suffer. We can learn from this—mentorship and nurturing the next generation helps us build a more connected and vibrant community. By offering our time and energy, we ensure that those who come after us are equipped to thrive.

Just as Mother Trees nurture young saplings, we must also appreciate and learn from the elders in our own communities. Elder wisdom is a treasure that connects us to our past, providing insight and perspective that can guide us into the future. The experiences and knowledge of our elders can help us navigate challenges with resilience and grace, just as the older trees sustain the forest.

When we take time to honor and listen to our elders, we strengthen the bonds within our communities. Their stories, lessons, and wisdom are like the nutrients shared through the roots of the forest—fuel for growth and a foundation for a healthier, more connected society. By valuing and supporting our elders, we help create an environment where everyone, from the youngest to the oldest, can thrive together.

Practice Altruism

Trees display altruistic behavior, sharing resources with their neighbors in times of need. This selflessness helps the entire forest endure tough times. When we practice altruism in our own lives, we contribute to the resilience of our communities, helping others not because we expect something in return, but because we know we are all connected.

Forests are a powerful reminder that thriving is not about standing alone—it’s about supporting, sharing, and growing together. The wisdom of trees urges us to cultivate our own networks of support, to be generous, and to look out for each other. When we learn from how trees interact, we too can create resilient, thriving communities, rooted in connection and growing stronger together.

Summing Up

But today, our forests and our planet face unprecedented threats. The climate is in crisis, and all living beings are at risk. At Activist360, we believe in the power of standing together—alongside trees and nature—to protect our environment. This is our clarion call: it’s time for us to act, to support one another, and to fight for the health of our planet. Let’s take inspiration from the trees and join forces to ensure a thriving future for all. Together, we can make a difference.

Protect Our Water & Safeguard Our Future!

September 29, 2024 / activist360

Defend Clean Water Act from Project 2025 Threat

Water as a Sacred Force Across Cultures

Many cultures around the world revere water as a sacred and life-giving force, recognizing its profound symbolic and spiritual significance. In Hinduism, water is regarded as the essential sustainer of life, without which most living beings, including humans, would not be able to survive. Indigenous cultures, such as the Lakota Sioux in North America, honor water as a sacred element central to life and ceremonies, often referring to it as “Mni Wiconi,” meaning “Water is Life.” In Buddhism, water symbolizes purity, clarity, and calmness, representing a path to spiritual enlightenment. Across African traditions, water is scarce and precious, reflecting the community’s resilience. This universal reverence for water underscores its critical role in sustaining life and reinforces the need for its preservation across diverse global communities.

Protecting Our Water: The Importance of the Clean Water Act

The Clean Water Act (CWA), enacted in 1972, is a landmark U.S. federal law aimed at regulating water pollution to restore and maintain the integrity of the nation’s water bodies. However, the act is under threat from initiatives like Project 2025, which proposes a conservative restructuring of the Environmental Protection Agency (EPA), prioritizing industrial and business interests over environmental protections. By undermining the Clean Water Act and reducing federal oversight, Project 2025 endangers access to clean water for vulnerable communities, particularly those near industrial zones.

The History Behind the Clean Water Act

The Clean Water Act was born out of a growing environmental crisis in the mid-20th century. Before its enactment, the Federal Water Pollution Control Act of 1948 was the first U.S. law to address water pollution, but it lacked the enforcement mechanisms to make a significant impact. During the 1960s, environmental concerns escalated, particularly following events like the 1969 fire on Ohio’s Cuyahoga River, which was so polluted it ignited when an oil slick caught fire. Public outcry, combined with the environmental movement of the time, fueled the demand for stronger water protection laws. This momentum led to the drafting of the Clean Water Act in 1972, aimed at restoring and maintaining the chemical, physical, and biological integrity of the nation’s waters.

Key Provisions of the Clean Water Act

Here are the key provisions of the Clean Water Act, designed to protect our nation’s waters from harmful pollution and ensure long-term environmental sustainability:

Permits and Regulation: Facilities that discharge pollutants into surface waters must obtain permits under the National Pollutant Discharge Elimination System (NPDES). This system helps monitor and regulate pollutants from industries, municipalities, and certain agricultural activities.
Water Quality Standards: States are required to establish water quality standards for various bodies of water, ensuring pollution levels remain below harmful thresholds. If these standards aren’t met, more stringent pollution control measures are implemented.
Protection of Wetlands and Streams: Wetlands and small streams, vital ecosystems for filtering water and providing habitat, are protected under the CWA. Recent Supreme Court decisions have clarified the types of water bodies covered, emphasizing the importance of maintaining ecological balance.
Pollution Control: The CWA encourages the development of technology to limit pollution. Facilities must adhere to technology-based standards, ensuring that water pollutants are minimized as much as possible.
Non-Point Source Pollution: In addition to direct discharges, non-point source pollution, such as agricultural runoff, is a significant contributor to water pollution. The CWA provides support for research and practices aimed at reducing this type of pollution.
Public Participation: The CWA allows citizens to take legal action against polluters and government agencies that fail to enforce the Act. This provision ensures accountability and gives the public a role in protecting water resources.

Health Implications of Unprotected Water

If water bodies are not adequately protected, water pollution can have severe health consequences for both humans and wildlife. Contaminated water may harbor harmful substances like heavy metals, pesticides, industrial chemicals, and pathogens, leading to various health issues. Exposure to polluted water can cause cancer, gastrointestinal illnesses, reproductive problems, and neurological disorders. For instance, chemicals like lead and mercury can impair brain function and development, while certain pollutants are linked to male fertility issues. Vulnerable populations, including children, pregnant women, and the elderly, are particularly at risk. Long-term exposure to polluted water can result in chronic health problems, overwhelming public health systems and endangering future generations.

Why the Clean Water Act Matters Today

The Clean Water Act has been instrumental in improving water quality across the United States. Since its implementation, many rivers, lakes, and other bodies of water have shown significant improvement. However, challenges remain, particularly with non-point source pollution and groundwater contamination, as well as the latest and most significant threat, Project 2025.

Project 2025 envisions a conservative restructuring of the EPA that places industrial and business interests over the imperative for clean water and air, potentially endangering communities and paving the way for toxins, chemicals, and oil to enter our waterways. It undermines the EPA’s capacity to safeguard diverse communities and the human right to clean water by favoring the self-interest of corporations over environmental and public health protections. This initiative threatens to reverse the progress made by the Clean Water Act, removing standards that protected all of us across the country and creating a patchwork of state standards that leaves vulnerable populations, such as low-income and Indigenous communities, at greater risk. By limiting the EPA’s authority and diminishing legal recourse for affected individuals, Project 2025 weakens the essential safeguards that protect public health and the environment.

What You Can Do: Reject Project 2025, Reject Trump & Vote Blue

Individuals play an essential role in supporting the goals of the Clean Water Act and protecting water resources. Here are a few ways you can make a difference:

Learn about the threats that pollution and toxins pose to your health and the health of your loved ones.
Support policies and legislation aimed at strengthening water protections.
Participate in local clean-up efforts to protect wetlands, rivers, and other bodies of water.

The Clean Water Act has laid the foundation for a cleaner, healthier environment, and it’s up to all of us to continue building on that legacy. By staying informed and taking action, we can help safeguard water resources for future generations.

Don’t operate out of fear, operate out of hope, because with hope everything is possible.
—Mni Wiconi