How a Wild Orangutan’s Use of Medicinal Plants Reveals the Secrets of Animal Intelligence

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Left: Pictures of Fibraurea tinctoria leaves. The length of the leaves is between 15 to 17 cm. Right: Rakus feeding on Fibraurea tinctoria leaves (photo taken on June 26, the day after applying the plant mesh to the wound). Scientific Reports (Sci Rep) ISSN 2045-2322.

Nature’s Ingenious Healers

In a new study documented in the lush rainforests of the Gunung Leuser National Park, Indonesia, a male Sumatran orangutan has been observed applying a biologically active plant to a facial wound. This intriguing behavior not only showcases the intelligence of orangutans but also opens new avenues in understanding the evolutionary origins of medicine. Here’s an overview of this fascinating study, which could reshape our understanding of non-human self-medication and its implications for natural healing practices.

Intelligent Healing: Orangutan’s Use of Medicinal Plants

Researchers from the Max Planck Institute of Animal Behavior and several Indonesian institutions captured a rare and enlightening behavior exhibited by a male Sumatran orangutan named Rakus. After sustaining a facial wound, Rakus was observed selecting, chewing, and applying leaves from the Fibraurea tinctoria plant—commonly known as Akar Kuning—directly onto the wound. Over several days, he applied the masticated leaves and juice, effectively managing his injury.



Process of wound healing. Rakus fed on and later applied the masticated leaves of Fibraurea tinctoria to his facial wound on June 25. On June 26 he was again observed feeding on Fibraurea tinctoria leaves (see photo). By June 30 the wound was closed and by August 25 was barely visible anymore. Scientific Reports (Sci Rep) ISSN 2045-2322.

Fibraurea Tinctoria: Nature’s Pharmacy

Akar Kuning is not just any plant; it’s a cornerstone of traditional medicine in Southeast Asia, renowned for its analgesic, antipyretic, and anti-inflammatory properties. The study highlights the presence of furanoditerpenoids and protoberberine alkaloids in the plant, compounds known for their antibacterial and healing capabilities. This suggests that Rakus’s choice of treatment was not coincidental but driven by an intrinsic understanding or learned behavior regarding the plant’s medicinal benefits.

Implications for Human and Veterinary Medicine

This behavior documented by the research team is among the first systematically observed case of a wild animal using a biologically active substance for wound treatment, providing invaluable insights into the potential origins of medicinal practices among humans.

Active wound treatment among great apes was only recently observed for the first time outside of the Sumatran orangutan. In Loango National Park, Gabon, researchers documented chimpanzees from the Rekambo community using insects as a form of medication. These chimpanzees applied insects to their own wounds and those of their peers, with nineteen instances of self-treatment and three instances where they treated other members of their community. This behavior provides further evidence of the sophisticated self-medication practices that exist within the great ape species.

The findings could have significant implications not only for understanding animal behavior but also for veterinary and even human medicine, offering natural alternatives or complements to synthetic drugs.

Evolutionary Perspectives on Health

The observation suggests that the use of medicinal plants is possibly an evolved trait among great apes, indicating that such practices could date back to common ancestors shared with humans. This behavior demonstrates a complex level of cognitive function and environmental awareness, suggesting that orangutans might be capable of health management practices that have evolved independently but parallel to human developments.

Future Research and Conservation Efforts

The study underscores the importance of continued research and conservation efforts in the habitats of orangutans. Understanding their behavior and environment not only helps protect these intelligent creatures but also aids in preserving the rich biodiversity of the rainforests, which holds untapped potential for medicinal discoveries.

Summing Up

The self-medication behavior exhibited by the Sumatran orangutan opens up new dialogues in both the scientific community and public sphere about the cognitive capabilities of non-human primates and their conservation. As we delve deeper into the natural world’s secrets, such studies are pivotal in bridging the gap between human and animal health practices, emphasizing the interconnectedness of all life on Earth.

By promoting awareness and fostering research in these critical areas, we can better appreciate our closest living relatives’ sophisticated behaviors and the natural resources that our planet has to offer. This study is not just a testament to the intelligence of orangutans but also a call to action for conservation and respect for wildlife and their natural habitats.

The Global Plastic Crisis: Corporate Accountability & Reduction Strategies

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Photo of plastics near trees. Myanmar (Burma). Photo by Stijn Dijkstra, Pexels.

The global plastic pollution crisis, driven by major corporations, has reached alarming levels. The recent study “Global Producer Responsibility for Plastic Pollution,” published in Science Advances, reveals a direct link between corporate plastic production and the branded waste found polluting our planet.

Key Findings of Plastic Pollution and Corporate Influence

The study, conducted over five years (2018-2022) across 84 countries, with particularly robust coverage in Southeast Asia, Africa, Europe, and North America, analyzed over 1,500 brand audits to quantify the sources of plastic pollution. The findings are staggering:

  • Just 56 companies accounted for over 50% of all branded plastic pollution documented globally.

  • The top contributors include The Coca-Cola Company at 11%, followed by PepsiCo (5%), Nestlé (3%), Danone (3%), and Altria (2%).

  • There was a clear linear relationship between a company’s plastic production levels and the amount of its branded plastic pollution found in the environment.

  • Food and beverage companies producing single-use plastics were disproportionately higher polluters compared to their production volumes.

  • A startling 50% of the plastic pollution items found were completely unbranded. This highlights the need for improved labeling to identify polluter sources and hold companies responsible.

These results show evidence that major corporations are driving the global plastic crisis through their excessive production of disposable plastic products and packaging. Food and beverage companies, which produce many single-use plastic products, were disproportionately higher polluters relative to their production volumes compared to companies making longer-lasting household and retail products. 

There were noticeable gaps in data from regions like South America, central and north Asia, the Middle East, and central Africa.

Strategies for Reducing Corporate Plastic Pollution

To combat global plastic pollution effectively, the study suggests several strategies:

  • Phase out non-essential single-use plastics: Corporate polluters, especially the largest polluters identified, need to eliminate unnecessary single-use plastic products.

  • Invest in alternative materials: Develop and utilize safer, sustainable materials.

  • Implement reuse and refill systems: Promote systems that reduce the need for single-use packaging and promote and alternative materials.

  • Maintain standards of transparency and accountability: Develop international standards for packaging labeling and branding.

The study also revealed that 50% of plastic pollution items found were completely unbranded, highlighting a critical lack of transparency and traceability. To address this, the researchers recommend the creation of an international, open-access database where companies would be required to report their plastic pollution – from production to waste.

By holding corporations accountable and compelling them to fundamentally shift away from single-use plastics, we can move towards tackling the plastic pollution crisis. This data-driven approach provides a clear roadmap for environmental activists, policymakers, and concerned citizens to demand urgent action from the world’s largest plastic polluters.

The Role of Transparency and Accountability

The study recommends creation of an open-access global database where companies must quantitatively track and report their plastic product and packaging data, as well as releases into the environment. 

There is yet no single, comprehensive global database that mandates reporting of all corporate plastic production and waste; however, there are several initiatives that aim to increase transparency and accountability.

  • The Global Commitment and Plastic Pact Network led by the Ellen MacArthur Foundation requires members to track and report their progress on plastic waste reduction. The Plastic Disclosure Project also encourages companies to voluntarily report their plastic pollution.

  • The European Union has implemented directives requiring companies to report on packaging and waste. 

  • The Global Plastic Action Partnership also engages stakeholders to shape national action plans on plastic pollution.

  • Some countries have Extended Producer Responsibility (EPR) legislation, which requires producers to report on production, recycling, and waste management activities. 

Mobilizing Stakeholders for Action

The clear link established between corporate plastic production and environmental pollution underscores an urgent need for systemic changes in how plastic products are produced, used, and disposed of. With a significant portion of plastic pollution traceable back to a handful of major corporations, especially those producing single-use plastics, the path forward requires a combined effort of corporate innovation and robust governmental regulation. By focusing on extended producer responsibility and encouraging sustainable alternatives, we can significantly reduce plastic pollution and move towards a more circular economy. It is crucial for governments, corporations, and consumers to work together to implement these changes and preserve our environment for future generations.

No More Excuses

The era of excuses and inaction has ended. We must hold these corporations accountable for their contributions to the plastic pollution crisis.

Source: Cowger, W., Willis, K. A., Bullock, S., Conlon, K., Emmanuel, J., Erdle, L. M., Eriksen, M., Farrelly, T. A., Hardesty, B. D., Kerge, K., Li, N., Li, Y., Liebman, A., Tangri, N., Thiel, M., Villarrubia-Gómez, P., Walker, T. R., & Wang, M. (2024). “Global producer responsibility for plastic pollution.” Science Advances, 10(eadj8275).

Earth Day, A Call to Action for Our Planet

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Blue Marble 2000. Credit: NASA, Image created by Reto Stockli with the help of Alan Nelson, under the leadership of Fritz Hasler. CC 2.0.

Earth Day, observed on April 22, is a global movement focused on protecting our planet. This year, as the collective acknowledgment of environmental degradation’s profound impact, we are also presented with an opportunity to champion a cause that could significantly alter the course of our environmental future—the Global Plastics Treaty.

Origins & Significance of Earth Day

Earth Day first emerged in 1970, initiated by Senator Gaylord Nelson after witnessing the catastrophic effects of an oil spill in Santa Barbara. The first Earth Day mobilized 20 million Americans and led to the creation of significant environmental policies and the Environmental Protection Agency (EPA). Today, Earth Day engages millions of people worldwide in activities aimed at preserving our planet, underscoring the power of collective action in tackling global challenges.

Why Earth Day Matters

Earth Day is crucial for several reasons:

  • Environmental Education: It raises awareness about pressing environmental issues and promotes sustainable practices.
  • Global Solidarity: Earth Day unites people across the globe, emphasizing that environmental stewardship is a shared responsibility.
  • Action and Advocacy: The day inspires individuals and organizations to engage in activities that protect the environment, from local clean-ups to global initiatives.

Earth Day 2024: End Plastic Pollution

The theme for Earth Day 2024 is the urgent need to combat plastic pollution. Plastics, particularly single-use plastics, are a severe threat to the environment, filling our oceans, killing wildlife, and disrupting ecosystems. The focus is on reducing plastic production by 60% by 2040 and eliminating single-use plastics by 2030.

The Urgent Call for the Global Plastics Treaty

In conjunction with Earth Day’s efforts, there is a significant push for the Global Plastics Treaty, a comprehensive international agreement aimed at tackling plastic pollution globally. With over 14,905 signatures, this petition calls on the United Nations and government organizations to adopt stringent measures against plastic pollution, including:

  • Reducing fossil fuel-based plastic production by 60% by 2040.
  • Holding producers accountable for environmental and health-related damages.
  • Banning plastic waste exports and incineration.
  • Promoting innovation in alternatives to plastic.

If we do not change our current habits, we will see a rise in hormonal diseases, cancers, and cardiovascular damage linked to the production and consumption of plastics. However, this bleak future is not inevitable; we have the ability to redirect our path and avoid this looming crisis.

How You Can Help

This Earth Day, let your actions speak louder than words:

  • Sign the Global Plastics Treaty Petition: Join the global movement to push for a binding international agreement that addresses plastic pollution head-on.
  • Reduce, Reuse, Recycle: Make personal changes to minimize your plastic usage.
  • Participate in Community Actions: Engage in local Earth Day events that focus on cleaning up and reducing plastics and help spread the word.

Final Thoughts

Celebrating Earth Day means committing to protect our planet continuously. By supporting initiatives like the Global Plastics Treaty, we can take significant steps towards a sustainable future free from plastic pollution. This Earth Day, let’s not just celebrate our planet; let’s take concrete steps to save it. Together, we can make a difference, but only if we act now. Join the movement, sign the treaty, and be part of the solution. We have the power to change our environmental destiny and ensure a healthier planet for future generations.

Our goal is not just an environment of clean air and water and scenic beauty. The objective is an environment of decency, quality and mutual respect for all other human beings and all living creatures.

—Gaylord Nelson