Knowledge of the oil system of the aircraft you fly is a must. There will be variations between models of aircraft, so if you fly many, add this information to your personal preflight briefing.

We tested 31 filters, from squeeze to press-style varieties, to find the best. These 5 made processing dirty backcountry water a breeze.

Inside a New Mexico lab, researchers estimate there is five bottle caps worth of plastic in human brains. Now they are trying ...