Rubies and emeralds have the colors they do because, like many substances, they absorb some colors of light. Most visible light, like sunlight, is composed of all the colors of the rainbow: red, ...

Gardeners pass the winter months spending more time inside, giving our minds and hands projects that keep us thinking green ...

When the Biden administration banned incandescent bulbs, I hoarded hundreds. If you’re not as nuts as I am—but still wary of ...