Dying young? Better live fast — if you’re an ant.

Among the many things I hope you’re thankful for — whether you’re U.S.-based and celebrating Thanksgiving this week, or you’re feeling generally grateful regardless of geography and time — you can add to the list the fact that you’re not an ant. Worker ants are essentially enslaved to the task of helping their mother, the queen, reproduce. Any individual worker is disposable, in support of that broader task of the whole colony.

And it’s not as though the workers don’t seem to be aware aware of this — to the extent that a worker ant can be “aware” — at some level. An experiment described in the current issue of The American Naturalist demonstrates pretty clearly that, when workers are injured, they take greater risks — as you’d expect if they’re trying to give the colony the greatest possible benefit from their shortened lives.

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