What will happen in year 2100

According to scientist David Archer, whose research is often featured in the renowned Nature magazine, the C02 that we are emitting from fossil fuels today will still be affecting the climate in many millenia from now. It will then require thousands and thousands more years for its complete absorption through the natural climate cycle.

Some of this future devastation is briefly discussed in the recently updated Copenhagen Diagnosis — a report authored by 26 leading climate scientists with the aim of updating the world on findings since the publication of the IPCC Fourth Assessment Report in According to this Copenhagen Diagnosis, regardless of when a peak in global emissions finally occurs, the global temperature cannot be expected to stop rising until several centuries later, due to the extremely long life cycle of C In other words, whatever the mitigation efforts of future civilisations, climate change is here to stay.

But long before this ever happens, humanity must prepare itself for an inland retreat and a constant battle against rising seawater that will continue for hundreds and hundreds of years into the future. The phenomenon of sea level rise resulting from thermal expansion sea water expands as it warms and melting ice sheets in Greenland and Antarctica is the perfect illustration of climate inertia in action.

As may be seen from the graph below, showing estimates from three different models, it takes several centuries for the oceans to fully respond to a warmer climate and altered carbon balance. Source: Copenhagen Diagnosis. This is no doubt going to have a devastating impact upon future cities, towns, agricultural areas and freshwater resources located near coastal regions.

Scenarios and forecasts are more powerful tools than predictions. They are not exact predictions, and it is understood that they may not happen as explained, but they allow us to get a glimpse of what different futures we might get to live in. For example, I thoroughly enjoyed writing three possible scenarios about the future in , which I called The Good, the Bad, and the Ugly.

Will it happen in any of these ways? I am not writing it as a scenario this time, but a series of small forecasts about different areas and how they may evolve in the next 80 years. Think about you in The further into the future we look, the more of a stranger our future self is for us. Also, most of us probably think we will not be alive anyway.

It is too far away. I will be years old. Who lives to that age? Not many people nowadays, but people like Ray Kurzweil, who aims to live long enough, to live forever , think otherwise. Kurzweil and other techno-utopians believe that advances in biotechnology, genetics, and medicine will allow us to live much longer lives in good health, or even achieve some kind of a-mortality and never again die due to health-related complications. It is certainly possible. Another issue is if we, as a species, will still be around.

This probability is too high if you ask me, but still, it seems it is more likely than not that we will be around as a species. So, we will probably exist, and there is the possibility that many of us will still be around in good health.

What will the world be like in ? The world in will be hotter, with more extreme weather and more natural disasters such as hurricanes and wildfires.

How much hotter? It is impossible to know right now, as it will depend on our actions during the next 80 years. There are different scenarios , from the world being 1. There is a big difference between these two extremes, but note that even if we reduced all our carbon emissions to zero today, the world would still keep warming for decades due to all the extra carbon dioxide already in the atmosphere.

Our best-case scenario is a 1. Even with this best-case scenario, the sea levels will rise around 1 meter, displacing millions of people and forcing us to invest trillions of dollars to make our coastal cities and towns habitable.

In this best-case scenario, natural disasters such as droughts, floods, hurricanes, wildfires, and so on, will become more frequent and more intense. It would turn our lives upside down. However, the further into the future you go, the more chances there are that some of those rates will vary considerably, wreaking havoc in those projections. Until recently, the consensus was that the world population would peak in around 11 billion people by the end of the century and then start shrinking as fertility rates go down.

However, a more recent study projects a more rapid decrease in the fertility rate due to advances in women education and contraceptive use, with the world population peaking at around 9 billion people by Whichever way you look at it, the world at the end of the century will be home to many more people , and it will be more densely populated, with higher pressure on resources and an already strained environment. All projections agree that most of the growth would come from Africa, tripling its population to 4.

In short, the world as we know it would not exist and the living conditions on the planet would be very harsh. Despite this bleak picture, experts still leave a door open to optimism. We know the possible climate scenarios that are opening up over the next hundred years.

Now is the time to take action that will change the course of the planet and offer a sustainable future for all. Actions to reduce emissions, limit temperature rise and thereby mitigate the effects of climate change. The most desirable scenario: 1. According to a recent report by the World Economic Forum , the consequences of this increase would be catastrophic: The increase in sea level could exceed 80 centimetres.

Flooding of coastal cities and the disappearance of territories. Increased risks to food production and, consequently, higher rates of malnutrition and hunger. Increased aridity in many arid regions and higher humidity in humid regions. Right now, medical nanorobots exist only in theory and nanotechnology is mostly a materials science. But it's a rapidly growing field. Nanorobots exist within the realm of possibility, but the question of when they will arrive is another matter.

This is likely by and almost certain by It's widely predicted that we will achieve this. What difference it makes will depend on what other energy technologies we have. We might also see a growth in shale gas or massive solar energy facilities. I don't think that wind power will be around. This does look like a powerful trend, other languages don't stand a lot of chance. Minor languages are dying at a huge rate already and the other major ones are mostly in areas where everyone educated speaks at least one of the other three.

Time frame could be this century. Eighty per cent of the world will have gay marriage Paul. This seems inevitable to those of us in the West and is likely to mean different kinds of marriages being available to everyone. Gay people might pick different options from heterosexual people, but everyone will be allowed any option. Some regions will be highly resistant though because of strong religious influences, so it isn't certain.

California will lead the break-up of the US Dev 2. There are some indications already that California wants to split off and such pressures tend to build over time. It is hard to see this waiting until the end of the century.

Maybe an East Coast cluster will want to break off too. Pressures come from the enormous differences in wealth generation capability, and people not wanting to fund others if they can avoid it. Space elevators will make space travel cheap and easy Ahdok.

First space elevators will certainly be around, and although "cheap" is a relative term, it will certainly be a lot cheaper than conventional space development.