Preventing this process using an iron-free, corrosion-resistant alloy barrier is particularly important in a city like Boston, where the air is damp and laden with salt water.

ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt

"Limiting salt in packaged and restaurant foods is perhaps the single most important thing that the Food and Drug Administration could do to save hundreds of thousands of lives and save billions of dollars in health care expenses, " center Executive Director Michael Jacobson said.

CNN: U.S. limits urged for salt in processed food