The double fishermen's knot, as demonstrated in this how-to video, is a safe knot to secure to separate lengths of rope together, forming high-strength loops of cord. This makes it useful in rock-climbing and in search and rescue, especially as a backup for other knots. Check out this video survival training tutorial and learn how to tie a double fisherman's knot or double overhand knot.
Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
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