The candle warms the air inside the glass, causing higher pressure. After the candle goes out (due to the oxygen being used) the air begins to cool. This cooling air creates lower pressure, creating a ...

Have you ever wondered what to do with decorative candle jars once they’re empty? There are plenty of creative (and practical) ways to upcycle the containers instead of just tossing them in the trash.

Scented candles come in handy glass jars that can be saved and reused as containers. Sometimes the glass has an attractive, smoky hue or a fancy lid that would fit right in on your bathroom counter.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? You can’t cherish your favorite candle scent in perpetuity—assuming you’re actually ...

Meghan Holmes is a writer and documentarian specializing in scientific topics such as the environment, invasive species, sustainability, and food issues. She holds a master's in Southern Studies from ...