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In This Issue

Sequencing the dead to save the living: Reviving ancient genomes of long-extinct creatures offers a window into past extinctions—and may help prevent future die outs
No gene is an island: Even as biologists catalog the discrete parts of life forms, an emerging picture reveals that life’s functions arise from interconnectedness
The decider: Informing the debate over the reality of ‘free will’ requires learning something about the lateral habenula
This week's table of contents

TAKING ONE FOR THE TEAM

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Each night a handful of Forelius pusillus ants step up to the task of closing the colony’s nest door from the outside. It’s likely the behavior benefits the colony, but the door-closers probably die after securing the nest.Credit: Tom Wenseleers

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