PITTSBURGH (KDKA) -- Some things are very sensitive when it comes to temperatures, and we are going to do an experiment that uses a temperature sensitive ink. "Temperature sensitivity" means that the ...

Pilot’s Frixion series of groundbreaking erasable-ink pens became international bestsellers following their launch in 2006. Frixion products have now sold a total of 1.5 billion units worldwide. Forms ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Elissa Sanci Elissa Sanci is a senior writer who has reported on label makers, ...