I'm really sick of people spitting on my ideas and throwing their pickles at me, no really. The problem is that i have a good idea but no-one seems to care. I thought maybe some people here could give me some feedback. So, at the risk of boring you i proceed.

My idea could change the way we think about evoloution. The idea is that we alter the human skin cells so that they convert sunlight into energy and sugars, or photosythisis to us nerds.

The idea is to take a human embryo in the earliest stages of skin developments. In these early stages there only a few thousand skin cells in the embryo. We work with a handful of these cells. By removing a chromosome from each of these cell nuclei. We may be able to replace this chromosome with a chromosome from a leaf cell. That chromosome might accepted. If it does then hopefully the information in that chromosome will make the cell produce the chlorofilm enzyme, this enzyme is vital in photosynthesis. If this works right then the chlorofilm will form chlorplast pockets in the cell cytoplasm. The skin cells would convert the sunlight into energy and sugars.

My other bit for this is the same exept we change the chromosome while its in the sperm cell and the egg cell, that way there is more chance of it being accepted.

If you have a knowledge of plant biology then you know that plants get proteins and sugars from photosythesis and they get vitimins and minerals from the soil beneath them. This would be the same with us humans. We would not have to eat as much, we could still get our vitimins and minerals with fruit, veg and milk.

Just think for a second. This would make humans evolve. The arrival of photosythesis would mean that we would not such big jaw muscles as we don't need to eat meat anymore. Less muscles means more space for the brain to expand.

I guess i might be wrong in some of it.

Please give me some feedback.

1. Plant DNA and animal DNA weren't exactly supposed to mix
2. Our whole mindset includes the idea of eating, if we don't, it's possible we could die just because we think we should, or we may go insane.
3. I don't think you could mix the two and get a living organism out of it, the two organisms are just too unsimilar.
4. There's more, but I'm just too lazy to post them.

This is simple thermodynamics bud. It is certainly something I've always thought would be cool, but it wouldn't work in practice, even assuming there was no problem with engineering the organism in the first place.

look at it this way: The average solar flux at the earths surface is 500 W/m² and the average efficiency of photosynthesis is ~4.5%. Your body needs on average 8368 kJ of energy each day (2000 calorie diet). If you were to lay in the sun ALL DAY, and we assume your exposed surface area to be 1 m², then your body would receive 43200 kJ of energy, of which you could utilize 1944 kJ. So, by doing nothing except lying naked in the sun all day every day, you might possibly be able to meet 23% of your energy requirements! I must admit that this is a bit more significant than I had expected, but it's still ridiculous. There is a very good reason why animals are not photosynthetic. We simply cannot get enough energy out of the process to function. Leave it to the trees. they have MUCH higher surface area.

Reference: http://patzek.berkeley.edu/E11/Photosynthesis.pdf

Note that after a bit more reading I see that my estimate is likely to be wildly optimistic. Revising it by an order of magnitude seems appropriate, which brings us to 2.3% of you energy requirements being met by photosynthesis.