In the autumn of 1977, visitors arriving in Ames, Iowa, encountered something they would never have expected to see in the American Midwest: a massive iceberg sitting inside a refrigerated room at Iowa State University. It had travelled thousands of kilometres from Alaska by helicopter, aircraft and truck, not as a scientific curiosity but as evidence for an ambitious idea.

In the autumn of 1977, visitors arriving in Ames, Iowa, encountered something they would never have expected to see in the American Midwest: a massive iceberg sitting inside a…

In 1977, Iowa State University hosted a conference on towing icebergs. A large iceberg was transported from Alaska to demonstrate the concept. Scientists and leaders debated the…