imnobodyx

I had the same question and it plagued my mind for days. Instead of telling you go read a book called "A Guide for The Perplexed" by E.F. Shumacher It helped alot just read it and it answers everything.

If all human kind was immortal it would allow us to be with our loved ones and enjoy thing. Also to do things we would otherwise never be able to do. But, this also means people who are mentally unastable people who whish to cause harm such murderers,rapists, terrorists, etc. Would be able to to as they please sooooo immortality for anyone has its pro's and con's. I would personally think that immortality is something we should not strive towards as human beings. Our mortality is what make us human, life must end for new life to begin. Death is something that must happen if we all lived forever it would be hell.

I came across a article my friend sent me about liquid body armor. It was essentially sheats of kevlar dipped in a Shear thickening fluid (or STF) which hardens almost instantly when force is is applied. Well i was interested in experimenting with this the STF is polyethylene glycol and silica nanoparticles the silica is supposed to be 500nm but I dont know what type or consitency the polyethylene glycol is supposed to be. I know Sigma aldrich has the silica but polyethylene i really am clueless about.