admin answers:

1. A possible yes, it may be possible to create mechanical devices that could help break down biodegradeable and non-biodegradeable materials. I would doubt molecular assembly would be useful since “assembly” is referring to the creation or putting together of something. In order to help the environment we need to be able to break down and/or manipulate the hazardous products into non-hazardous products, preferrable reusable. If it isnt reusable then it’s still going to just sit in a landfill.
2. Possible yes, similar types of uses have been looked into in the form of identifying issues in the body and delivering specific medicines to specific areas, so in the future it should be possible to use it with genetics; however, you would have to have the dna of an extinct animal before even considering an attempt at recreating it. Genetics in general is based off of stuff in your body like proteins and you have to know the proper sequence for them to be in to even start, and then cause that sequence to occur.
3. Another possible yes, like what I referenced in #2, it could be possible to use nano objects to deliver the proper substances that would break down or alter another substances’ structure.
4. Lightweight, yes, extremely strong, yes, repair itself, unlikely. Being able to repair itself requires either a living cell or mechanical manipulation. In either case the repair would have to be done by having an input (raw material of some sort) that can be used to repair/modify the damage.
5. Again, possible yes, nanotechnology by its very name is extremely small technology. What use would it be to creating an efficient mixture of substances to create a fuel. Fuel is a tricky issue, the problem is finding the right combinations that will produce enough energy to do the work required while being as efficient as possible (less emissions). There are gases already that can do such things, but are not generally used because they don’t generate useable engergy in sufficient quantities.

If you want more information on nanotechnology you can have a field day in a library. I once had to write a 10 page research paper on the subject. There are already many advances in the textile and health areas of science with this technology. Bookstores and libraries should have plenty of reading for you to enjoy.