It's easy to forget that structures such as bridges, wind turbines and scaffolding are held together by screws which could loosen – with catastrophic results. The new Smart Screw Connection system is designed to warn authorities before that happens.
The hooks in so-called "hook-and-loop" fastening materials (such as Velcro) are usually quite stiff, meaning they may damage other materials as they're pulled apart from them. Such is not the case, however, with a new mushroom-inspired alternative.
Metaklett is hook-and-loop ("Velcro") made from steel and can support up to 35 metric tons and withstand temperatures to 800 degrees Celsius.