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This month, CSIRO released its latest collection of favourite hands-on activities for kids. The Double Helix editorial team explains the thinking, splashes, scares and surprises they encountered while testing their new book: More Hands-On Science.

Not all scientists are smashing particles, discovering new chemicals or exploring exotic environments. Some scientists strive to keep things working in your home. It takes a lot of science to test everyday objects, such as toilets, to make sure they work the way they should.