Which supply chain innovation has most dramatically improved the transportation of temperature-sensitive biological research materials in the last decade?

The scientific research industry relies heavily on precise and timely delivery of specialized materials and equipment. From volatile chemicals to temperature-sensitive biological samples, the scientific supply chain presents unique challenges that aren't found in other industries. This poll tests your knowledge about the complex logistics that keep modern scientific research moving forward. Do you understand how breakthrough discoveries depend on breakthrough supply chain management?

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Phase-change material (PCM) containers with IoT temperature monitoring
Drone delivery systems for last-mile transport
Blockchain verification for chain of custody
Automated pneumatic tube transport systems