Naturefund's CO2 calculator data comes from various national and international institutions. Here you will find the exact calculation basis for every point: Basis of the data
Naturefund follows the voluntary commitment of the "Initiative Transparente Zivilgesellschaft" (ITZ) and publishes important figures and data on charitable work and the use of subsidies. All information can be found on our page Transparency.
Successful examination of Naturefund by auditors: The association uses the donations properly for nature conservation projects. Also, the tax office certifies Naturefund its charitable.