Which scientific company's logo underwent a major redesign in 2015, changing from a shield emblem to a simplified hexagonal design representing its focus on healthcare, agriculture and material science?

The visual identity of major scientific companies often evolves alongside their technological advancements and changing market positions. Some of the most recognized scientific brands have undergone significant logo transformations that reflect their expanding research areas, corporate mergers, or modernization efforts. This trivia tests your knowledge of iconic science industry logos and their evolution through the decades.

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Bayer
Pfizer
Thermo Fisher Scientific
Merck