‘Be in awe’: everything you need to know about the US cicada-geddon

The emergence of trillions of cicadas is under way in parts of the US - what should you do when they're around, and what on earth are zombie' cicadas?

The cicadas are arriving. The periodic emergence of trillions of cicadas, on a scale not seen in several hundred years, is under way in parts of the US, with several states reporting the orange-eyed insects are bursting from their underground dormancy.

Cicadas have started arriving earlier than expected in Illinois, a cicada hotspot this year, while there are reports of swarms emerging in Georgia, North Carolina and Tennessee, along with some other states.