Kids love building electric circuits, but connecting light bulbs to batteries with fiddly wires is tricky for young hands. Play dough and light-emitting diodes (LEDs) solve the problem beautifully.

We all carry supercomputers in our pockets and use dozens of electric gizmos every day but rarely stop to marvel at the magical act of flicking a switch. Use your ordinary conducting and extraordinary ...

Well, the first recipe was a complete FAIL. This edible DIY playdough was a cross between silly putty and playdough. It was so sticky and a complete mess. Ingredients included: marshmallows, coconut ...