askscience

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Why don't we shove the sand of the Sahara desert down in the ocean and recolonize/regrow the land? Are there other problems than the sand itself?	1
Can water absorbed by the body only be utilized by reaching the stomach? E.g. if a severely dehydrated person drinks water, is the water absorbed by the walls of the mouth/throat on the way down "lost"?	1
What are the main problems with transfering a human brain to a robot body? We already have bionic eyes and limbs that can be connected to the brain. So if we can create artificial blood are there any biological body to brain dependencies remaining?	1
Are bacteria reliant on a pre-existing environment it has adapted to in order to survive? Or could firing bacteria into space from earth form new life on a planet it lands on?	1
Where would the best place be on earth for a modern "noah's ark" if a new cataclysmic event occured if you consider flooding, firestorms etc. hitting the earth?	1
Human difficulty of building and maintaining muscle compared to muscular animals like lions or gorillas. Does an organism's DNA affect protein and other nutrient efficiencies and priorities to specific bodily functions like muscle growth?	1
If you crush 10,000 calories worth of meals into a pill and swallow it do you still get 10,000 calories and the nutrition therein or does the proteins, carbs, fat and calories "disappear" in the process?	1
Would the human lifespan become longer over the time of generations, if we were completely shielded by the negative effects of the sun and radiation from space?	1
If you crush 30 000 calories worth of food into the size of a pill and swallow it, is nutritional value lost? If yes, how?	1
Can someone explain in layman's terms how something as frail as us humans survived the journey through evolution?	1

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