[Teaching Tech’s] latest video discusses “3D printed Velcro.” But as even he admits, Velcro is a trademark, so we think it is more appropriate to talk about hook and loop fasteners. In fact, you can ...

As a species, we’ve done a pretty good job at inventing some useful devices. But as clever as we think we are, given sufficient time, natural selection will beat us at our game at almost every turn.

Hook and loop fasteners made of spring steel -- similar to Velcro devices but much stronger -- have been developed by researchers in Germany. These fasteners are resistant to chemicals, and can ...