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Love ‘em, hate ‘em, the world wouldn’t turn without ‘em! Let’s see what you know about one of the most important types of tech out there… Will you pop a tyre or can you vroom into a drive out of five? Or six – we like cars so much we dropped in a bonus question!

Written by Celia Berrell A small steel ball in a short smooth tube held in place by a spring, is the kind of switch that works in a twitch and starts an exploding thing.

It’s been really busy at Double Helix headquarters in the last few weeks. We’ve moved office, to the CSIRO Discovery Centre in Canberra. There are lots of cool things at our new workplace, including a whole museum of CSIRO science!