What does that mean? The news, analysis and community conversation found here is funded by donations from individuals. Make a gift of any amount today to support this resource for everyone.

MPR News is Member Supported

Modern people move through life surrounded by hundreds, perhaps thousands, of simple tools: pencils and paper clips, zippers and silverware. Duke University civil engineering and history professor Henry Petroski studies the genesis and refinement of these humble everyday objects.

The universe in a paper clip

Share