The World Is Built on Sand... and We're Running Out

The video discusses the critical role of sand in construction and its increasing scarcity due to high demand. It explains how sand is formed, the different types of sand, and why certain types are preferred for construction. The environmental impact of sand mining is highlighted, including its effects on ecosystems and the rise of illegal sand trade. The video also explores potential alternatives to natural sand, such as manufactured sand and recycled materials, and the challenges in adopting these solutions.

How does the demand for sand in China compare to that of the United States?

What role does sand play in the construction of buildings and roads?

What are the potential impacts of sand mining on aquatic ecosystems?

In what ways can sand be harvested from non-traditional sources, such as glaciers?