Here's how to make an oil lamp out of a can of tuna. It will burn brightly for at least a couple of hours just from the tuna oil and the tuna isn't wasted either!

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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