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Monthly Archives: November 2012
Parasite Philosophy: Just Keep Swimming!
Lots of microorganisms can survive in remarkably difficult conditions – bacteria can bloom in hot springs at 80°C, archaea live around hydrothermal vents reaching a toasty 113°C, while viruses can survive in the Arctic sea ice. For human pathogens, only … Continue reading
Posted in Disease, Evolution, Microorganisms, Science
Tagged african sleeping sickness, antibody, blood, bloodstream, complement, flagellum, hydrodynamic drag, life cycle, mechanical, parasite, trypanosome, tsetse fly
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Lights! Action! On Mood and Brain Function
The response of the human brain to light harks back to Cro-Magnon times, when sunrise signalled the earliest opportunity to leave your cave to get your breakfast without being pounced on by a carnivorous beast lurking in the shadows. In … Continue reading
The Life and (Long) Times of Bugs
If there’s one thing that Jurassic Park taught us, it’s that evolution is a long, drawn-out process*. Novel traits evolve in different species over millions of years, so most human scientists aren’t around long enough to see them happen in … Continue reading
Posted in Evolution, Genetics, Microorganisms, Science
Tagged bacteria, chelating agent, citrate, E. coli, Escherichia coli, evolution, exploitation, glucose, progeny
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A Doctor Who Approach to Bird Evolution
Any Doctor Who fan will tell you that the ability to move through both space and time is a fundamental part of any Time Lord’s lifestyle. Researcher’s from the USA, UK, Canada and Australia applied a similar concept to the … Continue reading
Posted in Ecology, Evolution, Science
Tagged adaptive zone, avian, biodiversity, bird, Darwin's finches, diversification, Doctor Who, ecology, evolution, latitude, longitude, niche, space, time
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Bat vs. Marburg virus: A Seasonal Struggle
Marburg is a highly infectious virus from the family Filoviridae (which includes Ebola virus), and is associated with a high fatality rate (~90%) and severe haemorrhagic symptoms. Originally described in simultaneous outbreaks in Germany and Serbia in 1967, it is … Continue reading
Posted in Disease, Ecology, Microorganisms, Science, The Environment
Tagged bat, cave, Egyptian fruit bat, filoviridae, marburg, mine worker, public health, Python Cave, seasonal, tourist, Uganda, virus
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