Life cycle assessment of lightweight materials for automotive applications

When we talk about our environments as we only have one planet we should be very cautious because there is an upper limit for the amount of pollutions and emissions that we can put in our environment. These boundaries could be seen in each category that we are polluting or emitting and define the limit for emission and after that we are beyond the planetary boundary for that item, which is not considered in the safe operating mode anymore. For some of the categories like biodiversity loss and nitrogen cycle, we have already passed the safe boundary over 10 times and over 3 times, respectively, and there is nothing we can do about that. In the climate change we have just passed the safe boundary and all the international efforts like the Paris agreement is to stop more damage. Phosphorous cycle and ocean acidifications are next to pass the safe boundary. Another important category is ozone depletion, which was once passed the boundary and now it is coming back to the limits (Rockström et al. 2009).