# Life Cycle Assessment in Earthster
The most important concept in LCA is that of Life Cycle. To get an understanding of the impact of a product, we must look at the complete picture, and follow it from the early beginning (when its materials are extracted), through manufacturing, distribution, use and end of life.
Basically, we need to account for every impact in nature, because of the existence of that product or service. To do that, we build a model of the product's life cycle. And we break it down in smaller pieces. And we find information from those smaller pieces.
In this section, you will be able to read about how we apply Life Cycle Assessment in our calculations.