Why cicadas love to land on you, irresistible human

Even on an Air Force base tarmac, a cicada landed on the president's neck. 

The spectacular emergence of the [INS: Brood X cicadas :INS] — with some 1.5 million of the harmless insects emerging per acre in some places — has resulted in cicadas landing on people's shirts, arms, hair, and...beyond. But the bugs have no real...