Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: iStock Toothpaste tubes have long been a challenge to recycle due to being made of different materials (primarily ...

Two Canadian students have developed a colour-changing toothpaste designed to make toothbrushing easier for children to understand. Ella Zhang and Gillian Leung, students at Havergal College in Canada ...

Toothpaste tubes have long been a challenge to recycle due to being made of different materials (primarily aluminum and plastics) that render them incompatible with recycling streams. However, Colgate ...