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Army ants have tiny brains and are nearly blind, yet they routinely perform extraordinary feats of engineering, building bridges with their bodies to span gaps that they need to cross. In this video from the Swarm Lab of the New Jersey Institute of Technology, recorded in the field in a tropical forest in Panama, researchers pulled apart one of these bridges to study how army ants recover from such a rupture. One conclusion is that, although individual ants are incapable of understanding the movement of their colony as a whole, they have evolved a behavioural code that tells them to stop in their tracks if another ant is walking on top of them, a strategy that allows them to rebuild quickly. There are, however, some more complex army ant-bridge manoeuvres that researchers are still attempting to explain, such as when ants will construct a shortcut bridge rather than taking a longer route. Capturing this phenomenon close-up, this short video observes the surprising capabilities of collective intelligence to solve complex logistical problems.
Video by Helen McCreery, Simon Garnier, Radhika Nagpal, Mike Rubenstein, Melinda Malley, NJIT, Harvard University
Editor: Adam D’Arpino
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Work
A Swedish expat in the Philippines wonders: what’s up with people sleeping at work?
14 minutes
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Biography and memoir
The unique life philosophy of Abdi, born in Somalia, living in the Netherlands
29 minutes
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Cognition and intelligence
What’s this buzz about bees having culture? Inside a groundbreaking experiment
8 minutes
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Earth science and climate
The only man permitted in Bhutan’s sacred mountains chronicles humanity’s impact
22 minutes
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Cosmology
The Indian astronomer whose innovative work on black holes was mocked at Cambridge
13 minutes
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The ancient world
An ancient Roman’s hilarious (and perhaps relatable) response to a social snub
2 minutes
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Love and friendship
After his son’s terrorist attack, Azdyne seeks healing – and his granddaughter
25 minutes
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Astronomy
Seven years later, what can we make of our first confirmed interstellar visitor?
59 minutes
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Physics
Is it possible to design a shape to roll along any fixed path?
4 minutes