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Evolutionary biologists have long wondered why cooperation remains a viable survival strategy, since there will always be others who cheat. Now, MIT physicists have found a possible answer to this question: Among yeast, cooperative members of the population actually have a better chance of survival than cheaters when a competing species is introduced into an environment. 
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DNA may be ‘selfish’, but the emergent behaviour of cells can get pretty altruistic at times!
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Forget computer viruses - magnet-making bacteria could be used to build tomorrow’s computers with larger hard drives and speedier connections.
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“The smell of a body is the (bacteria themselves) which we breathe in with our nose and mouth, which we suddenly possess as though (they) were (the body’s) most secret substance and, to put the matter in a nutshell, its nature. The smell which is in me is the fusion of the (bacteria) with my body…”
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Scientists grow carefully-managed bacterial communities, paving the way for bacteria-made drugs and alternative fuels.
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A biological computer, in which the basic components are made from bacteria rather than silicon circuitry, has taken a step from science fantasy toward reality at Imperial College London.
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Rival colonies of the bacteria Paenibacillus dendritiformis can produce a lethal chemical that keeps competitors at bay. When competing colonies get too close poisons are unleashed, creating a toxic no-man's land in between.
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APC scientists have shown that brain levels of serotonin, the ‘happy hormone’ are regulated by the amount of bacteria in the gut during early life.
Gina Stepp's comment,
June 12, 2012 11:08 PM
Interesting . . . especially considering that gut regulation and other emotion-related processes are affected by early-life bonding (attachment . . . relationships). You can't separate bodily health from mental health in the end.
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New research shows how bacteria evolve to increase ecosystem functioning by recycling each other's waste. The study provides some of the first evidence for how interactions between species shape evolution when there is a diverse community.
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Just as banks store away only the most valuable possessions in the most secure safes, cells prioritize which genes they guard most closely, researchers have found.
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When faced with life-or-death situations, bacteria -- and maybe even human cells -- use an extremely sophisticated version of "game theory" to consider their options and decide upon the best course of action.
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People harbor more than 100 trillion microbes. These microbes live in various habitats on and within the human anatomy; the gut houses the densest population of all, containing hundreds of bacterial species.
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(PhysOrg.com) -- In the human world of manufacturing, many companies are now applying an on-demand, just-in-time strategy to conserve resources, reduce costs and promote production of goods precisely when and where they are most needed.
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