We may receive a portion of sales if you purchase a product through a link in this article. While following the crowd isn’t always a good idea, it can be a clever hack when it comes to figuring ...

The owner's manual for your car will list its recommended oil weight, whether that's a standard format like 10W-30 or something more unusual. That number refers to the viscosity (or thickness ...

These high-tech mills run thinner oil because it contributes to lower emissions, which helps automakers meet ever tightening regulations. As for efficiency, that's simple. Heavy oils are thick ...

Usually our hair is thrown away after it's cut. But a hairdresser in Wales has been using her customers' hair to make special mats, which are used to help the planet. For more innovative solutions ...