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DIY
Practical advice grounded in science.
DIYA flying-saucer boat: how does a Vietnamese maker’s unusual project work?
Tran Long Ho built a vessel that looks like a science-fiction UFO. It neither flies nor spins like a disc: a motor salvaged from a personal watercraft drives it across the water. His project offers a vivid example of how a creative idea becomes a real engineering problem.
DIYWhat to remove from a photo before posting: metadata is not the only location clue
GPS can be deleted, but buildings, reflections, receipts, uniforms and shadows may reveal far more than we notice.
DIYHow to pack a cooler properly: less melting, safer food and better use of space
Good packing does not create cold, but it slows heat entering from outside and helps perishable food remain at a safe temperature.
DIYDo AI writing detectors really work — and how can we use them without false accusations?
A detector can be a useful signal, but a percentage on screen is not proof of authorship. Practical tests and research show why a wider review is essential.