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1
vote
2answers
103 views

Is greed an evolved trait?

Thanks for looking. I am not a biologist, but I am fascinated by evolution. I was watching the news this morning and, as so often is the case, there was a news story about a corrupt politician who ...
5
votes
1answer
88 views

Could murder be modeled as an infectious disease?

Background "When swine flu hit the population it spiked in certain areas and tapered off in neighboring regions, it hits hardest where people have least protection and this pattern is more ...
3
votes
0answers
87 views

Why do ants dig surface paths?

A few days ago I observed a corridor built and used by ants that went over a path in fields: Why do they build it? It seems it doesn't bring any considerable protection from the surrounding ...
3
votes
1answer
78 views

What mechanisms do animals living in groups (herds, packs, swarms) have against spreading contagious diseases?

While for example a wolf pack provides protection to a sick wolf, increasing its chance of survival, there is a risk of infecting other members of the pack, decreasing their total chance of survival. ...
5
votes
1answer
120 views

Modern reference for Kropotkin's lazy bees

I have been reading through Peter Kropotkin's Mutual Aid: A Factor of Evolution and he mentions a curious fact about bees (bolding by me for emphasis): predatory instincts and laziness continue to ...
19
votes
1answer
1k views

Why do ants live so long?

I was surprised to learn that worker ants in some species live many years. I would have expected a lifespan of a few weeks or months (which is apparently the case for many species). What factors ...
26
votes
2answers
575 views

What are the trajectories of flying insects?

Many flying insects tend to have very jagged trajectories. For moves of a fruit fly looks like a random walk. Is there any research on the properties of trajectories (e.g. their fractal dimension or ...