Which famous architectural product recall involved glass panels spontaneously shattering from skyscrapers, leading to widespread changes in safety standards?

Throughout architectural history, some buildings and structures have faced serious issues that led to product recalls or major modifications. These situations often reveal the complex interplay between innovative design, material science, and public safety. Test your knowledge about a famous architectural recall that changed industry standards and practices!

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The John Hancock Tower in Boston (1973), where nearly all 10,344 glass panels had to be replaced
The Burj Khalifa in Dubai (2010), requiring reinforcement of 40% of exterior glass panels
The Shard in London (2013), where defective tempered glass led to a full exterior replacement
The Shanghai Tower (2015), where wind pressure caused widespread glass delamination issues