This was what what Sydney looked like yesterday morning.

A combination of severe drought in South Australia and strong westerly winds brought fine, iron-rich dust right to the coast. The air quality was 17 times worse (whatever that means) than usual, and several hundred people called for ambulances for respiratory problems. There’s also concern that if the Olympic Dam uranium mine in South Australia is allowed to go open-cut, tailings containing carcinogenic alpha radiation may be deposited by similarly strong winds over the country’s most heavily populated corner.

Still, it made for a pretty amazing morning.