Add Yahoo as a preferred source to see more of our stories on Google. Aibekov Daniyar / Getty Images Silly putty is stretchy and sticky, and if you're not careful, its ooey-gooey texture can easily ...

Welcome to PopSci’s at-home science projects series. On weekdays at noon, we’ll be posting new projects that use ingredients you can buy at the grocery store. Show us how it went by tagging your ...