Your task is to create a short presentation deck $($maximum $10$ slides$)$ addressing the following $($imagine you are presenting to David Newman$)$:

Introduction: Briefly introduce the Millipore case study and its focus on sustainability.

Successful Initiatives: Highlight two sustainability projects that Millipore implemented successfully. Explain what made them successful.

Challenges & Opportunities: Identify two challenges Millipore faced in their sustainability journey. For each challenge, suggest a potential solution or opportunity for improvement.

Conclusion: Briefly summarize your key takeaways from the Millipore case study.