When Colgate was developing its new low-waste Keep toothbrush, which has a reusable aluminum handle and replaceable heads (a starter pack costs $9.99; additional heads are $4.99 for two), the company ...

Katherine Martinko is an expert in sustainable living. She holds a degree in English Literature and History from the University of Toronto. Haley Mast is a freelance writer, fact-checker, and small ...

According to Colgate-Palmolive, more than 495 million adult manual toothbrushes were purchased in the U.S. in 2020 and likely will end up in landfills because they cannot be easily recycled. This ...