What Will The World Be Like 150 Years From Now?

Human lifespans have been going up for decades, and most of us can expect to see 80 even if we aren't that careful about our habits. What if that were boosted to 150? Some say the first people to reach 150 are alive right now. There are centenarians alive today who have seen two world wars, the invention of nuclear power and jet planes, and the remaking of the world map. How might the world look to the denizens of 2163? We spoke to experts in the field to get a taste of it. Technology plays a big role, but it could be human behavior and society that will change the most.
1. Medicine:

Living to 150 will largely be a result of better medicine. Gene therapy is already on track to cure disease. It has the capacity to repair mitochondrial disease before birth. A century or more from now, it will likely have made cancer a thing of the past, as well as other genetic disorders ranging from cystic fibrosis to muscular dystrophy.

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Meanwhile stem cell therapies could help us grow new organs and even limbs. People will be healthier longer, perhaps because their aging body parts will be replaced with fresh ones. And tiny nanomachines the size of cells could be on task in our bodies, repairing damage as it occurs or eliminating disease.

3.

Robots are already a fixture in manufacturing, and computers do some jobs better than people. So what happens to the future of employment, especially if people live so long they won't retire until they're 100 years old?

"If most goods and food can be produced with few or a modest percentage of people involved, then the focus shifts to services," said Glen Heimstra, a consultant and founder of Futurist.com. He noted that a lot of service jobs involve interacting with real people, and that's not likely to change.

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Entertainment will be another key area for work. "Think of all the words being written right now on the Web, all the images being uploaded, all the videos being produced, by both professionals and amateurs. It seems a safe prediction that this will increase."

And how about the idea of a guaranteed income in order to keep the capitalistic machine running? It isn't as far-fetched as it sounds: Alaska gives a payment to every citizen that comes from oil revenues. This rather rosy scenario depends on human civilization getting past one huge bottleneck: energy.

4.energy:

Even today, solar power is getting more competitive in the market with fossil fuels as photovoltaic technology improves. But other alternatives to oil may see their day.

Nuclear may yet see a renaissance, for example, as there are several technologies in the works to make nuclear plants safer and deal with the nagging problem of radioactive waste.

Meanwhile there has been progress, if slow, towards working fusion reactors that produce tremendous amounts of energy (think: the sun) without the dangerous levels of radiation. And some people predict that we'll send a set of solar- satellites into space that will beam solar energy down from orbit. The day may actually come when humans wean themselves from fossil fuels.

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On the flip side, we might not be able to get the necessary technologies up and running fast enough. "There is a possibility that we are in an energy and resource over-shoot situation, and will not be able to adjust in time to avert a crash," Hiemstra said, though that's less likely in his opinion.

In that case, our 150-year-olds may be looking at life that's a lot like it was 150 years in the past where energy-intensive machines like cars and planes were reserved only for the very wealthy.

5:cities

If humans continue to spew CO2 into the atmosphere at the same rate, global temperatures will rise anywhere from 3 degrees Fahrenheit to nearly 11 degrees in the next century. Sea levels are predicted to rise between two to six feet, said Gavin Schmidt, a climatologist and Deputy Chief of NASA's Goddard Institute for Space Studies. "To get a sense of what this would mean in daily life you might want to look at Venice -- increasing incidences of flooding at high tide and during storms and slow adaptation to the new reality."

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Our 150-year-old might be telling her great grandchildren about the good ole days in the legendary city of New Orleans, which by then will be underwater. Gone would be Miami Beach and a big piece of the Netherlands and Bangladesh. China's current boom towns of Guangdong and Shenzhen might look like those villages submerged under the reservoir created by the Three Gorges Dam.

6:Biodiversities

Human activity has meant both habitat loss and direct death for thousands of species. As a result, one of the biggest mass extinction events since the Cretaceous Period 65 million years ago looms on Earth's horizon. Anthony Barnosky, a palaeobiologist at the University of California, Berkeley, predicts that in 300 years time, 75 percent of all mammal species will have disappeared from this planet.

Anyone living 150 from now may only know big animals such as the apes, chimpanzees, elephants, lions and tigers from books (or whatever medium is current then).

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At the same time, invasive species will fill niches, and our great-grandchildren won't know anything different. "Look at Hawaii," said Quentin Wheeler, taxonomist and professor at the School of Sustainability at Arizona State University. "All those flowers that the tourists love are mostly invasive species. The local flora was decimated."

Instead of elephants, we may have boa constrictors and coyotes.