Top tech gifts for teens in 2025, from instant cameras and headphones to projectors, speakers, and creative gadgets. Fun, ...

Discover how to build a simple DIY Stirling engine powered by heat from candles using an empty spray can and pen components.

Learn how to make a simple hand-cranked power generator from scratch using basic materials like DC motors, a wooden base, an ...

To overcome the challenges of operating in conditions such as fog, smoke or total darkness, the team is examining bio-inspired echolocation, which draws from how bats use ultrasonic sound waves to ...