2100: The Future of Our World

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Learning From the Past

The Latin America and Caribbean region is expected to surpass Europe in population by before peaking at million in Meanwhile, Indonesia — the most populous country in Southeastern Asia — is projected to reach its peak population in The immigrant population in the United States is expected to see a net increase of 85 million over the next 80 years to according to the UN projections, roughly equal to the total of the next nine highest countries combined. In Canada, migration is likely to be a key driver of growth, as Canadian deaths are expected to outnumber births.

The global population is expected to grow by about 3. More than half of this increase is projected to come from Nigeria, the Democratic Republic of the Congo, Tanzania, Ethiopia and Angola, along with one non-African country Pakistan. Meanwhile, Nigeria will surpass the U.

The Future of the World in 2100 - An Amazing Future For Humans

Two-thirds of all countries and territories in Europe 32 of 48 are expected to lose population by Between and , by contrast, only six countries in the world lost population, due to much higher fertility rates and a relatively younger population in past decades. Half of babies born worldwide are expected to be born in Africa by , up from three-in-ten today. Nigeria is expected to have million births between and , the most of any African country. The number of births in Nigeria is projected to exceed those in China by That figure is projected to more than double to 49 years by This pattern is evident when looking at individual countries in the region.

For example, in , the median ages of Brazil 33 , Argentina 32 and Mexico 29 are all expected to be lower than the median age in the U. How much will we change our use of fossil fuels, and the resulting emissions of heat-trapping carbon dioxide? A weather forecast asks, for example: Will it rain in downtown Oakland on November 10?

What will happen before

A climate model asks: How much it will rain in Northern California over the next ten winters? Climate models can make longer-term predictions because they're much less specific about timing. For each box, such as this one of air over the ocean, the model starts with the current conditions—the temperature, humidity, wind, and so on. Then it calculates all of the ongoing processes—increasing sunlight, rising air pressure, etc. Each of these is represented with a very complex equation. Source: California Institute of Technology. With so many changing ocean and atmospheric factors, climate models are extremely complex.

A supercomputer running a climate model needs to make trillions of calculations just to simulate a single day of the climate. Yet climate models are surprisingly good at predicting how the climate will change over the course of 10, 20, or 50 years.

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They can also answer questions, such as what will happen if we emit more or less CO 2 into the atmosphere. It can perform up to , trillion calculations per second.

World’s population is projected to nearly stop growing by the end of the century

Source: Oak Ridge National Laboratory. One of the clearest predictions from climate change modeling is warmer temperatures. The amount of warming we'll get depends mainly on the amount of fossil fuels we burn. The black line on this graph shows the average of a set of temperature simulations for the 20th century. The colored lines show projected temperatures for the 21st century based on three emissions scenarios.

Shaded areas around each colored line indicate the range of likely outcomes based on running the climate model many times. See the full interactive graph at climate. In predicting the climate of the future, the biggest unknown is what humans will do. How will we change our use of fossil fuels—and thus our CO 2 emissions? The answer involves individual and collective decisions at local, national, and international levels. To understand the consequences of the paths we might take, scientists use climate models. They input different amounts of future CO 2 emissions to see how they affect the climate.

http://wordpress-11600-25562-61098.cloudwaysapps.com/soliloquies-of-the-horizons-the-prose.php RCP stands for representative concentration pathway, meaning a pathway that assumes a certain concentration of carbon dioxide in the atmosphere. The number in each scenario name indicates how much heat would be added to the atmosphere. Not only that, there would be about 10 times as many extreme heat days heat in the 89th percentile —about 40 days per year in , compared with only four days in the s. There would also be about six heat waves per year, instead of one, and these heat waves would last longer. Observed temperatures are shown until , followed by data from four climate models for through The gray band shows the possible variability in the modeled future.

Climate change models predict that some parts of the world will get more rain and snow than the historical average, while others will get less. How much will rain and snow increase or decrease in the future? This animation shows climate model predictions of rain and snow for different parts of the world, from through Blue colors mean more rain or snow than average based on — , tan to orange mean less.

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A few regions are predicted to get more rain or snow. In the United States, the Northeast will likely get wetter, as will Alaska. The outlook is not so clear for the rest of the globe—different climate models give different results. One thing all the climate models agree on: big rainstorms will be get even bigger, dumping lots more rain. In the United States, this is most likely in the Northeast and the upper Midwest.

This could increase the chances of river flooding, especially along the coast where sea level is also rising. Weather records show that extreme rains are already beginning to increase. Predictions of how much more often extreme rainfall or snowfall events will happen at the end of this century to under the high carbon dioxide emissions scenario RCP 8. We use cookies to improve your experience on our website. By using our website you consent to all cookies in accordance with our updated Cookie Notice. America Recycles Day is on Wednesday, and the green holiday exists for good reason: Recycling helps keep rubbish off the roads, reduces the need for Earth-scarring metal-mining operations, and fuels industry jobs.

The practice also keeps planet-warming carbon dioxide out of the air. Every ton of recycled aluminum cans about 64, of them , in fact, keeps 10 tons of CO2 out of the atmosphere, according to Popular Mechanics. Recycling is no panacea, though. An ever better idea is to curb carbon emissions, though President Donald Trump has vowed to withdraw the US from the Paris climate accord. That globally denounced decision came on the heels of the hottest year the world has seen since — when scientists started keeping global temperature logs — and the fifth annual heat record of the past dozen years.

In , planet Earth 's temperature averaged 2. That means that even if carbon emissions were to drop to zero tomorrow, we'd still be watching human-driven climate change play out for centuries. And we all know emissions aren't going to stop immediately. The key thing now, Schmidt said, is to slow climate change down enough to allow us to adapt as painlessly as possible. He estimated that we will blow past that by about But Schmidt is more optimistic about keeping temperatures from rising more than 3.

That's the increase the UN hopes to avoid. Let's assume that we land somewhere between those two targets.

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At the end of this century, we'd be looking at a world that is on average about 3 degrees Fahrenheit above where we are now. But average surface temperature alone doesn't paint a full picture. Temperature anomalies — how much the temperature of a given area deviates from what would be "normal" in that region — will swing wildly.