A Canadian teenager built a flashlight powered by body heat that can shine without batteries

A young Canadian inventor, Ann Makosinski, created a remarkable flashlight that runs without batteries. It cleverly uses the ...
CNN

After years of use, this is still the best flashlight I’ve tested

The flashlight app on your smartphone might work in a pinch, but when you really need a reliable light source, nothing beats a dedicated flashlight. A far cry from the weak incandescent versions you ...