You take a capillary glass tube with a bore of -0.5 millimeters or smaller, a propane torch, a file and a pair of goggles. Then, you build your own thermometer. While temperatures outside were hanging ...

When you think of a thermometer, you might imagine a thin glass tube with mercury, but it turns out we can make our own thermometer with items that are mostly found just around the house. Our ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...