The 'moon wobble' will intensify coastal floods: Here's what that means for Australia

Extreme floods this month have been crippling cities worldwide. This week in China's Henan province, a year's worth of rain fell in just three days. Last week, catastrophic floods swept across western Germany and parts of Belgium. And at home, rain fell in Perth for 17 days straight, making it the city's wettest July in 20 years.