While we don’t often see them in the hobbyist community, 3D printers that can extrude gels and viscous liquids have existed commercially for years, and are increasingly used for biological research.

Have you ever been presented with a photo of yourself but all you can focus on is your teeth? Or put on a bright lipstick and just lost it over how yellow it makes your smile look? You're not alone.

Adding teeth whitening toothpaste to your daily brushing routine is an excellent way to address discoloration caused by ...