Conduction is the direct flow of heat from your warm body into your colder surroundings. In winter, all that heat escaping ...

REI is holding an early Black Friday sale with discounts of up to 30% on outdoor apparel and gear. The women's REI Co-op 650 Down Jacket is currently on sale for $90.29, a 30% discount from its ...

Staying warm in winter can be a challenge. Mother Nature throws everything at us this time of year: shorter days, chilling wind, ice, sleet, snow and frigid temperatures. But the key to staying safe ...

Support our work! The Inertia may earn a small commission from affiliate links in this article. Learn more about our gear review policy here. We humans put out a considerable amount of heat. But when ...