/u/DarthStark1's posts in /r/askscience

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If the blood-brain barrier is able to stop most pathogens from entering the brain, is there any reason why this barrier isn't used elsewhere in our bodies to essentially 'scrub' out pathogens from our blood?

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Having been told we dream in black and white and add colour after, why is this the case, and how do we know?

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When people take a blow to the head they're told not to fall asleep otherwise they can lapse into a coma. Why does stopping them from falling asleep stop this from happening?

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Do scientists on board the ISS have to worry about their actions affecting the station's position/movement? What do they do about it?

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Oxygen is a 'free radical' that can cause cell damage via ionisation, increasing risk of types of cancer and other medical conditions. Were rates of these conditions were less/none pre-oxygen-catastrophe? And were they high when the atmospheric oxygen percentage was higher than it is now?

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How ling can we extend life using robotics?

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Studies have shown our eyes jump around as we read. What about when we read scrolling text?

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If we quarantined everyone for a week, what impact would this have on transmittable viruses?

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Do the rates of recessive genetic conditions decrease with time?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If the blood-brain barrier is able to stop most pathogens from entering the brain, is there any reason why this barrier isn't used elsewhere in our bodies to essentially 'scrub' out pathogens from our blood?	1
Having been told we dream in black and white and add colour after, why is this the case, and how do we know?	1
When people take a blow to the head they're told not to fall asleep otherwise they can lapse into a coma. Why does stopping them from falling asleep stop this from happening?	1
Do scientists on board the ISS have to worry about their actions affecting the station's position/movement? What do they do about it?	1
Oxygen is a 'free radical' that can cause cell damage via ionisation, increasing risk of types of cancer and other medical conditions. Were rates of these conditions were less/none pre-oxygen-catastrophe? And were they high when the atmospheric oxygen percentage was higher than it is now?	1
How ling can we extend life using robotics?	1
Studies have shown our eyes jump around as we read. What about when we read scrolling text?	1
If we quarantined everyone for a week, what impact would this have on transmittable viruses?	1
Do the rates of recessive genetic conditions decrease with time?	1