RIGK emphasizes sustainability. Navigate to the 'Nachhaltigkeit' (Sustainability) section, specifically the 'Was ist Nachhaltigkeit?' page. Identify RIGK's highest sustainability goal and their primary method for contributing to a livable future through sustainable practices. Summarize both concisely.
Navigate to rigk.de. Accept all cookies to ensure full site functionality. Click on the 'Nachhaltigkeit' (Sustainability) link in the main navigation. Click on the 'Was ist Nachhaltigkeit?' (What is Sustainability?) sub-link. Read the content to identify RIGK's highest sustainability goal. Identify their primary method for achieving this goal, specifically relating to packaging and plastics. Synthesize the identified goal and method into a concise answer.
Successfully navigate to the 'Was ist Nachhaltigkeit?' page. State RIGK's highest sustainability goal, which includes protecting climate and biodiversity, preserving habitats and landscapes, and conserving economic resources. State their primary method for achieving this, which is through the return and recycling of used packaging and plastics.