Iron-on patches can repair clothing or add personal flair to backpacks and hats. And now they could power wearable tech, too.

Iron-on circuit; thermal drawing of e-fibers; recyclable, self-healing circuits; 'living metal' bioelectronics.

It was in physical education class when Laila Gutierrez swapped out self-harm for a new vice. The freshman from Phoenix had long struggled with depression and would cut her arms to feel something.

Build a DIY magnetometer with a couple of seasoning bottles ...