CableLight
Master Don Juan
Anybody ever take any Ecology classes? The stuff we're going over now is pretty interesting and ominous at the same time. Check it out:
Cognitions of Disaster
- The population of the Earth is currently ~6.5 billion and growing at a rate of ~1.5% a year. With a finite supply of fossil fuels which, with the exception to coal, are projected to be completely depleated within our lifetimes (well, some of us) and a hunger/malnutrition rate of 20-40%, you can see something isn't quite right. Since we're not even feeding our current population, is it possible to feed an increasing one?
Some possible theories suggested include:
1) Synthesizing the essiential amino acids and protiens into forms of food currently alien to man. This is possible, yet current production costs yield market costs far too great for most people to afford, let alone the people who need them the most (i.e. people in poverty).
2) More food from the sea. Making up roughly 75% of our world, it should be an ideal place to look towards in our search. Yet, the current population incorporates ~10% of their diet from the ocean. Also, even if we wanted to get more from the ocean, it only produces roughly 100 grams of usable human "food" per meter per year, which is basically the equivilent to the Sahara desert. This is mainly due to every form of life depending on the abundance of plant materials and their ability to produce food of their own (i.e. photosynthesis).
phytoplankton -> zooplankton -> small fish -> big fish -> humans (arrows indicate what consumes what). With photosynthesis effectively eliminated at around 300 ft below the surface, the "producer base" is nonexistance. Only forms of creatures at least partially carnivorous or those that surface are found. It should also be noted that most nutrients plants would need are found on the ocean floor, while all the light they require is found at the surface.
3) Vegitarian diet. Going against our biologic nature would result in the need to consume much more vast amounts of plant biomass than concievably possible to get a healthy amount of the essential amino acids and protiens for survival. Also, the proverbial "box" of creatures that are naturally herbavores is only so big, and infringing upon it could push some of those creatures out of existance.
4) Increase amounts of cultivated land. There are essentially 30 billion acres of land on the planet. We use ~3 billion for cultivation. Given that, with the right equipment, it's possible to virtually grow anything anywhere, why not expand how much land we use? Simply put, manipulating photosynthesis in greenhouses and whatnot = $. A lot of money.Once again, cost rules out.
5) Increase yields on existing croplands. With the use of irrigation systems and fertalizers to optimize soil for cultivation, the amount of food produced would be greatly increased. Yet, again, the cost of doing this is the limiting factor that prevents it from being reality. Also, the use of fossil fuels increase with increased production. Apparently it takes like 9 K-cal of energy to get 1 K-cal back. Eliminating the use of fossil fuel-dependant machinery would, of course, severely limit production.
Then there's some random figures and statistics we got...
3 billion acres x 2 people/acre (supported) in addition to the ~10% of our diet we get from the ocean = enough currently availible food for ~6.6 billion people. Note that this is not a stable number, but it does seem possible to feed the world with our current situation if it weren't for costs. We got some other figures/projections about it maybe being possible to support 9-10 billion in 50 years or something, but our population would still be too much of a factor.
That's as far as we got so far...I dont know, I just think some of this stuff is interesting.
Cognitions of Disaster
- The population of the Earth is currently ~6.5 billion and growing at a rate of ~1.5% a year. With a finite supply of fossil fuels which, with the exception to coal, are projected to be completely depleated within our lifetimes (well, some of us) and a hunger/malnutrition rate of 20-40%, you can see something isn't quite right. Since we're not even feeding our current population, is it possible to feed an increasing one?
Some possible theories suggested include:
1) Synthesizing the essiential amino acids and protiens into forms of food currently alien to man. This is possible, yet current production costs yield market costs far too great for most people to afford, let alone the people who need them the most (i.e. people in poverty).
2) More food from the sea. Making up roughly 75% of our world, it should be an ideal place to look towards in our search. Yet, the current population incorporates ~10% of their diet from the ocean. Also, even if we wanted to get more from the ocean, it only produces roughly 100 grams of usable human "food" per meter per year, which is basically the equivilent to the Sahara desert. This is mainly due to every form of life depending on the abundance of plant materials and their ability to produce food of their own (i.e. photosynthesis).
phytoplankton -> zooplankton -> small fish -> big fish -> humans (arrows indicate what consumes what). With photosynthesis effectively eliminated at around 300 ft below the surface, the "producer base" is nonexistance. Only forms of creatures at least partially carnivorous or those that surface are found. It should also be noted that most nutrients plants would need are found on the ocean floor, while all the light they require is found at the surface.
3) Vegitarian diet. Going against our biologic nature would result in the need to consume much more vast amounts of plant biomass than concievably possible to get a healthy amount of the essential amino acids and protiens for survival. Also, the proverbial "box" of creatures that are naturally herbavores is only so big, and infringing upon it could push some of those creatures out of existance.
4) Increase amounts of cultivated land. There are essentially 30 billion acres of land on the planet. We use ~3 billion for cultivation. Given that, with the right equipment, it's possible to virtually grow anything anywhere, why not expand how much land we use? Simply put, manipulating photosynthesis in greenhouses and whatnot = $. A lot of money.Once again, cost rules out.
5) Increase yields on existing croplands. With the use of irrigation systems and fertalizers to optimize soil for cultivation, the amount of food produced would be greatly increased. Yet, again, the cost of doing this is the limiting factor that prevents it from being reality. Also, the use of fossil fuels increase with increased production. Apparently it takes like 9 K-cal of energy to get 1 K-cal back. Eliminating the use of fossil fuel-dependant machinery would, of course, severely limit production.
Then there's some random figures and statistics we got...
3 billion acres x 2 people/acre (supported) in addition to the ~10% of our diet we get from the ocean = enough currently availible food for ~6.6 billion people. Note that this is not a stable number, but it does seem possible to feed the world with our current situation if it weren't for costs. We got some other figures/projections about it maybe being possible to support 9-10 billion in 50 years or something, but our population would still be too much of a factor.
That's as far as we got so far...I dont know, I just think some of this stuff is interesting.