What is the purpose of this web site?

This site is devoted to discovering facts about environmental impact of everyday objects. If you ever wondered whether using plastic grocery bag is better or worse for the environment than paper one, this site is for you. We analyze the production process of various items, as well as the use and disposal (complete life cycle), and score their impact on the environment in three areas: resource depletion, pollution generated, and energy released into the environment. We also combine this impact into one number, the Composite Environmental Impact Index (CEII), to allow a quick and easy comparison of different items.

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Definitions

PI - Pollution Index. Indication of the amount and severity of the pollution generated during the life cycle of an item. The higher number, the more pollution.

DI - Depletion Index. Indication of the amount of resources used during production and disposal of an item. The higher number, the more resources are used (and the less sustainable the product is).

EI - Entropy Index. - Indication of the amount of energy wasted during the life cycle of an item. The higher number, the more energy is wasted.

CEII - Composite Environmental Impact Index. Indication of the item's impact on the environment, taking into account the resources used and the pollution generated during production, use, and disposal of the item. The higher number, the higher impact.

And the winner is:
Plastic

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What is the purpose of this web site?

Definitions