2029 huh? (1 change will be that we will start to count years from a different date, as soon as enough people will realise not everyone in the world is christian)
either
humanity destroyed itself at least 7 years ago,
or
it achived singularity some 5 years ago xD.
possibility 1:
after the discovering of nuclear energy, humanity entered the age in which science started progressing exponentially... everything that's invented can be used for good or bad (ie you could cut bread or hurt someone with it).... new technologies are more helpful/destructive with time and more accessible...like the nuclear bomb, its an already destructive enough technology to destroy humanity, but it's accessible to just a few people....after some time we get for example genetic engeneering, for bad purposes we can use it to make a virus which could kill everything on earth and spread through air->also globaly deadly but accessible to many more people....so i believe by 2020 we will have invented kinds of technology with which almost everyone could destroy humanity if they decide so. you see where i am going...if there continue to exist violent people on earth, we're screwed. that may sound like no matter what we're screwed, but you also have to include that medicine also progresses, and starts researching more psychological fields, and all the functions of the brain, how someone gets violent etc...or in this scenario, the progress of science is too fast, for a human being, so we're overrun by it...technology ahead of peoples minds=boom
possibility2:
different nations unite(like the EU), the north americn union, the asian uinion, united kingdom of africa....which in the end unite to a one world nation, humanity. with 1 kind of money currency (which is all virtual, even cards dissapear, you have like a barcode on the arm instead for now...). of course if the wolrd government is running on the same system todays governments do, we all become slaves and stuff lol, but happily humanity somehow manages to change it to a selective democratic government, where geniouses are the leading ones (where with geniouses i dont mean just high IQ, but a combination of love,intelligence,consciousness...).with this everything changes, hunger dissappeard already when geneticaly modified organisms were recognised as necessity for this. you can eat a strawberry 20 times bigger, 20 times more concentrated 20 times healthier etc... people use sexual intercourse as a tool for pleasure, while for reproduction, human cloning is responsible, we're baby's progress is monitored all the time, so that disseases etc are detected/corrected faster than ever. artifical intelligence replaces more and more work, and eventually the need to work dissappears too. people only work when they want to do it. research of space continoues too, with bases/laboratories being build on moon, later on mars etc.... scientists create living organisms form scratch, recreate the dinosaurs, mammoths etc, and creat 100% new plants and animals or what tehy'd be called...we start inhabiting distant planets with those creatures, or even intelligent lifeforms, to study how humanities evolve.... if other intelligent beings exist in the universe, we communicate and share scientific discoveries and laugh together LOL. AI gets more intelligent than all human brains on earth together, nanotechnology gets its break through-->nanobots everywhere, cleaning oceans in no time, building a house u just thought about in some seconds, making fried chicken in few seconds out of raw chemicals... the virtual world grows/extends/progresses so much that some people decide to just live there (ya no laws of physics in there), as memories and personality can be transfered to computers (by that time computers are so complicated that our brains looks like primitive technology =P), death is a thing of the past as the genes responsible for it in our cells are changed or you just clone urself and transfer personality. people do what they like to do, wether being this art, sports, gaming or *insert a sort of entertainment we havent invented yet*.
thats what i think about that hehe.
you can seriously think about it becoming reality, take it as a fairytale or just laugh at this wall of text if you think it's ******** xD
oh i left out ALOOOOOT of things yea....um not global warming, as i don't believe that it will cause any bigger harm...