Edison made many trips to Northumberland County, and one man from Watsontown did some research to find out why.

Illustrating showing Thomas Edison holding graphene on the left and a man with safety goggles holding a large blue crystal on the right Crystal craze: Fortuitous experiments led to graphene in a ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Annemarie Conte Annemarie Conte writes the Ask Wirecutter column, ...