We are honored to welcome Jyoti Ma, internationally renowned spiritual teacher and Vision Keeper of the Center for Sacred Studies (centerforsacredstudies.org). A guiding force behind projects that honor the Earth and all Peoples, Jyoti Ma co-founded Kayumari’s spiritual communities in both America and Europe. Her pioneering work includes the International Council of Thirteen Indigenous Grandmothers and the Unity Concert, bridging cultures to foster unity and environmental stewardship.

As the founder of The Fountain (thefountain.earth), Jyoti Ma envisions an economic model rooted in reciprocity and collaboration, guided by Nature and the Sacred. In her role as a delegate of the Mother Earth Delegation of United Indigenous Nations, she has led the Sacred Territories Initiative, a global effort to protect Mother Earth’s sacred sites and Original Peoples. Jyoti’s life’s work has been to build alliances with indigenous culture and medicine keepers, uniting them with organizations dedicated to sustainable economic, social, and environmental solutions.

Join us for an inspiring conversation with Grandmother Jyoti Ma—a rare opportunity to connect with a leader dedicated to unity, healing, and Earth’s protection.

Ashley Tamburello is a seasoned leader in environmental and social change, with over 20 years of experience spanning 30 countries. She currently serves as Director of Programmes and Engagement at TreeSisters, where she leads projects that support women-led communities, advance biodiversity, and foster sustainable development. 

Ashley’s background is rich in collaborative and strategic roles, having worked with prominent organizations such as National Geographic, NASA, and EIT Climate-KIC. Known for her expertise in building impactful partnerships, passion for a Just Transition and leading large-scale environmental initiatives, she brings a commitment to addressing global challenges with innovative, community-focused solutions.

Dedicated to sustainability and social equity, Ashley’s work is driven by a belief in the power of empowered communities and systemic change to create lasting impact.

Georgina is an experienced leader in organisational change and operations, with a strong background in psychology, gender equity, project management, and leadership consultancy. She joined TreeSisters in May 2021 and has served as Executive Director since February 2023. In this role, she guides the charity toward fulfilling its mission, empowering a dedicated team, ensuring financial sustainability and maximising impact while fostering strong relationships with our partners.

With a deep foundation in change management, unconscious bias, inclusion, and growth mindset, Georgina is driven by a wholehearted commitment to increasing equity and fostering inclusive leadership. Her work is underpinned by a personal dedication to justice and environmental sustainability, particularly supporting women to restore ecosystems that are vital to both people and the planet.

Georgina’s journey to TreeSisters was led by her background in gender equity and her desire to support women. However, it was her connection to the charity's mission that reawakened her love for Nature and expanded her understanding of the urgent need for Nature-led, community-led and women-led restoration. Today, she is resolutely committed to giving her best in service of Mother Earth, championing the healing of our planet for future generations.

Madeleine holds the role of Restoration Partnerships Manager at TreeSisters, managing the relationships with the incredible restoration partners that TreeSisters has the privilege to work with. Her professional experience weaves several years of working in environmental project management in Bolivia together with practical work on the frontline with women in recovery from severe trauma.

She is passionate about radical reconnection with Nature, women's empowerment and supporting communities across the Earth to lead restoration of their landscapes, trees and forests with their own local knowledge.

In her personal time, Madeleine is dedicated to supporting women to reconnect with their innate wisdom through women's circles and space holding, as well as enjoying walking in the Malvern Hills where she is very grateful to live.

Strategic Lead, Regenerosity | Lush

Born in the bioregion of the Brazilian Atlantic Moist Forests, Ruth grew up witnessing first hand the destruction of the natural environment. This prompted an early interest in environmental issues, nurtured a deep love for the rainforest and fueled great passion for driving change. She considers herself a systems activist, identifying key nodal interventions in systems to support the transition to regenerative cultures. She has been co-creating Lush’s environmental strategy since 2004. She is a trustee and co-founder of Re-Alliance, a collective of practitioners bringing regenerative design to the humanitarian and development sectors, a co-creator of Regenerosity, an initiative with a mission to flow resources to grassroots regenerative projects.