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Why does your dog wag its tail?

Dr Karl uncovers the curious hidden meanings behind your dog’s tail wagging. THE DOG HAS been man’s best friend for thousands of years – so you’d think we’d know how to read its emotions. When the tail is stiff, the ears are tucked in and the body is held tight, most of us recognise it […]

The invention that saved soldiers’ lives in WWI

Australian physicist William Lawrence Bragg located enemy artillery with a makeshift infrasound reader. IN THE FIRST World War, artillery killed more soldiers than any other weapons. The counter-measure was to blow it up with your own artillery. ‘Sound Ranging’, the best system to find enemy artillery, was developed by William Lawrence Bragg, an Australian and […]