The cicada life cycle has three stages ... They spend their entire developmental period in these underground burrows before molting their shells and surfacing as adults to mate and lay eggs.

They mate, molt and then die, leaving behind their offspring ... The overlap of these two broods has been dubbed by an expert as "cicada-geddon" – but it won't be the biggest cicada event.

After all, it takes a few days for newly emerged nymphs to molt and reach full maturity so ... The timing all comes down to soil temperature. Cicada nymphs begin to emerge when the temperature ...