Try experimenting with different colours of ballpoint pen to create layers of texture. Light-coloured felt tips can easily pick up darker colours from a drawing surface. This can be avoided by working ...

Although we're hearing more and more about stretchable electronics, the fabrication of such devices' components is far beyond most people's abilities. Now, however, scientists have created inks that ...

The following is a transcript of the video. You've probably doodled with one of these in class: a blue Bic pen. But when Oscar Ukonu uses it, he creates this — a monochromatic and hyperrealistic ...