Adults and children are classmates who learn on Earth.

Leaving a Sustainable Future for Our Children,
We provide education and conduct business activities
regarding the conservation of biodiversity.

We believe that "without the right knowledge, the right action cannot be taken",
We provide ‘nature positive’ education, business support,
and original products related to the Sustainable Development Goals joining forces with partners in all fields.

Our Works

Sustainability Support

Supporting multifaceted business projects for sustainable development goals, nature positive, and more.

Support Cases

Uniform Project

Uniform as educational material

For 150 years as a well-established school uniform manufacture, Akashi school uniform company collaborated to provide educational style uniform regarding biodiversity and the SDGs in daily school lives.

Uniform Project

Art Project

Kengo Bonsai Gallery

Bonsai, which could last over 100 years with special care, is a symbol of sustainability. It is an art that is created through the cohesion of nature and humanity. This project of paintings adds their own imagination to the bonsai and will transmit the culture of ‘bonsai’ to the world.

Product Planning

We plan original products with the highest quality for education for the benefit of nature positive learning.

Apparel Items

The apparel industry has the highest environmental impact.
We offer a new proposal for apparel production with custom-made products of the highest quality that do not contribute to the abundance of waste.

Endangered Teas

There are Japanese teas that are endangered due to decrease of producers and change in the production environment. These teas give us the opportunity to transform our behavior.

Two donations from our company

  • 日本自然保護協会(NACS-J)

CLASS EARTH’s business purpose is Nature Positive (biodiversity restoration) , and since ecosystem conservation is a global issue, we donate to both environmental conservation activities in our own country, Japan, and also around the world.


Topics on SDGs, Nature Positive, and more


What is Biodiversity: 3 Diversity Levels and 5 Loss Factors

The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) warns that one million species of plants and animals are currently threatened with extinction worldwide, and many of these species will become extinct in the coming decades unless Nature-Positive Biodiversity restoration progresses.


about Nature Positive

Project WILD Japan Representative Coordinator, General Manager, Environmental Education Promotion Office, Development and Research Department, The Park Foundation

Hiroshi Kawahara

Professor and Dean, Faculty of Creative Engineering, Kagawa University

Yoshihiro Suenaga


Supporters shared their thoughts on Class Earth


Discovery Greige

After World War II, humans, placing too much importance on economic development, destroyed the environment and ecosystems to the point where natural recovery was impossible.

To restore the ecosystem, we humans, as homo sapiens, Latin for “smart humans”, the only uniquely intelligent species, must learn and act.

The “respect for beautiful things,” which other creatures may not have, also fosters compassion for nature and others.

Through our own experiences, we focus on unknown things and explore them widely and deeply.

These are the colors that we hope will foster a spirit of curiosity.

This sophisticated new color between gray and beige is perhaps the most special of all earth colors.

It is also the color of the earth, the starting point of the food chain.

Nature Positive

What is Nature Positive?

The goal of halting and restoring biodiversity loss by 2030, agreed upon at the G7 Summit in June 2021.
In order to fulfill the international commitment to conserve and protect at least 30% of the world’s land and sea areas (30 by 30), Japan has also been emphasizing the conservation of ecosystem of OECM, Other Effective area-based Conservation Measures.

Biodiversity & Climate Change

Biodiversity and Climate Change are the Two Big Pillars of the SDGs.
In recent years, detailed indicators for carbon neutrality have been established and the movement of countries has accelerated, and companies in Japan are also moving toward 2050.
However, biodiversity conservation is still in the process of developing specific indicators, and only few companies have incorporated nature positivity into their management indicators.

A buyers-only community is also being planned.

Those who own CLASS EARTH items are the ones who have opened the door to contribute to Nature Positive.
We are working on organizing regular parties and preparing a membership-based salon as platforms for information exchange and networking to incorporate biodiversity recovery into the economy and society.