The idea of making your own semiconductors from scratch would be more attractive if it weren’t for the expensive equipment and noxious chemicals required for silicon fabrication. But simple ...

Here are the ingredients meant to achieve common claims you'll find on toothpaste labelsBy Catherine RobertsThe toothpaste ...

The critical thing to look out for is the toothpaste’s active ingredients, which should include antimicrobial agents such as triclosan, fluoride, and stannous fluoride. These ingredients help to ...