The Urban Photo Awards are back for 2021 with more stunning, beautiful, and magical photographs. There are many styles, ...

Solar energy is a possible alternative, but while we have become reasonably good at storing solar electricity in lithium-ion ...

The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark ...

The latest nutrition guidelines urge Americans to avoid highly processed food. But when it comes to carbs, many people don't know which ones are ultra-processed. Here's an easy way to find out.