Children made catapults, slime and “squishy” balls at The Lane School Thursday evening, projects some parents were happy they were making at school and not at home. The evening, organized by the ...

In his new book Defending Your Castle, William Gurstelle shows you how to build catapults, crossbows and all the other devices you need to keep the invading hordes at bay. For this project to work ...

Here’s an Instructables to bring back the obnoxious kid that lives not so far down in all of us: Learn how to turn one of those miniature Altoids tins into a tiny catapult. It’ll be fun for nobody but ...

If humanoid robots are to work alongside us—as doctors, as housekeepers, as anything in between—roboticists need to create dexterous, gentle hands for their machines. As the Economist’s Babbage blog ...

AS A jet fighter screams away from the deck of an aircraft-carrier a swirl of vapour trails from the steam-driven catapult that launched it into the air. Catapults are an ancient technology, developed ...