Institute of Environmentology, Research and Education for Sustainability or Sustainable Development, Kazutoshi Fujihira

Progress in Eco-Housing: Cooperation of Solar Power Generation, Storage, and Water Heating

Fujihira K. April 2025.
In 2025, Inagi Eco-House installed storage batteries and replaced the water heater. This renovation has further strengthened energy saving and emergency preparedness.

World Population to Decline from the Mid-Century?

Fujihira K. April 2025.
Will the global population turn from rapid growth to decline? Introducing a notable book, this essay discusses the situation and factors in the sudden demographic change.

Japan's New Tram System Revitalizes Utsunomiya City

Fujihira K. March 2024.
This article outlines the background of introducing the Light Rail Transit (LRT) into Utsunomiya, its main characteristics, and its prospective impacts on the city.

Why Could Hokusai Live and Work So Long?

Fujihira K. September 2023.
This essay explores the secret of Katsushika Hokusai's healthy longevity from three perspectives: walking, diet, and passion.