Looking for a new experiment to try out with the kids? Here's one that has been around for ages and is still so much fun to do: elephant's toothpaste! The science behind the experiment The yeast acts ...

Meghan Walbert is Lifehacker's Managing Editor. She has a degree in journalism and has worked at Lifehacker as a writer and editor since 2018, covering parenting, foster care, online child safety, and ...