From self-heating jackets and heated vests to insulated cold-weather gear for outdoor work, many products help you stay warm ...

Commercial heat packs (containing iron and water, or supersaturated sodium acetate) and cold packs (various ammonium salts) can be used to show exo- and endothermicity. Heat packs that contain iron ...

What you pack for a camping trip in the winter will differ from what you bring for a trip in warmer weather. Here are the essentials you should always carry.