The measure of human demands on Earth’s natural resources is known as our ecological footprint. Currently, we use the equivalent of 1.5 Earths to produce all the renewable resources we use. As the human population grows, the challenge of reducing our footprint becomes more urgent. Learn more about the impact of the ecological footprint
World Wildlife Fund Inc. is a nonprofit, tax-exempt charitable organization (tax ID number 52-1693387) under Section 501(c)(3) of the Internal Revenue Code. Donations are tax-deductible as allowed by law.