If you see a cockroach scurry through your kitchen, your first reaction might be: “Arghh! A cockroach! Quick! Squish it!” But wait! You don’t need to sully your favorite legal caper. Instead, fetch a jewel wasp to do your bidding. Join National Geographic Explorer Anand Varma to learn how these brutal parasites rob a cockroach of its free will before inflicting a slow and horrific death.
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