In all sprint running races (100m to 400m), every hundredth of a second gained or lost in the race counts. But, most importantly, the fastest male and female sprinters attain incredible top running speeds, with peaks in excess of 44km per hour and 38km per hour in the men’s and women’s 100m races, for example. So what makes a fast...

When you have a cold or other respiratory illness, you might see a range of different colours of mucus or snot when you blow your nose. We’re often told – even by doctors – that green or yellow secretions...

America is home to many bizarre religious movements. In Kentucky, there’s a stunning 155-metre long, all-wood replica Noah’s Ark, part of the Ark Encounter theme park. It was built for US$100 million by Creationists,...