“You might not be familiar with cordyceps unilateralis, the ‘zombie ant fungus,'” Dr. Donovan said. “In nature, it affects the behavior of ants, causing them to climb to an optimal spore dispersal point while the fungus devours them from the inside.”

Senator Chandler made a face. “I hope that’s not what you’re showing us large-scale,” she said. “I’m fairly certain there’s a Geneva something against things like that.”

“Oh no. We’ve improved on it quite a bit. We can engineer the spores to produce an incredible range of complex behaviors in their hosts, after which they’re broken down and excreted. Say hello to cordyceps unilateralis candida.”

Donovan opened the shades, revealing a second group of rhesus monkeys–this one playing Texas hold’em poker.