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The sheer size of some cities, like Bangalore and Nairobi, means successful start-ups are inevitable. With a population greater than 10 million, Bangalore has a wealth of well-educated people creating a large resource pool of innovative thinkers. With Startup Festival India and the Kyron Accelerator, the city has set a goal of creating 500 start-ups over the next five years. In Nairobi, mobile technology use by the general population has spurred the tech industry. M-PESA, Africa’s successful, cashless, currency system, has attracted Google’s attention, and may mean an emerging competitive market in this African hub.
Even with incentives such as population size, government money, and innovative ideas, no city has emerged as a clear competitor to California’s Silicon Valley. However, with multi-national corporations and a worldwide, mobile workforce, there may never be a tech hub like it again.

With a history of collecting the greatest minds and the most innovative technology for more than thirty years, there is no location likely to match the strength and power of California’s Silicon Valley. A March 2014 BBC report tracked the city of origination for the most successful start-ups over the last ten years. California’s Silicon Valley was in the lead with 201 start-ups. New York came in second with 144, and London, third, with 90. Trailing behind were Berlin with 27, Bangalore with 26, and Sao Paulo with 21.
There are a number of cities around the world that boast about a few phenomenal success stories. Amsterdam is frequently cited as the founding city of Layar, the first company to create an app that combined smartphone cameras with location-based information. One successful start-up, however, does not make it Silicon Valley. Lower taxes, quality of life, and community collectives, however, help make Amsterdam attractive to tech entrepreneurs.
Some cities, like Toronto, are trying to replace venture capital funds with government funding to spur tech development. The Ontario Emerging Technologies Fund has $250 million to invest in clean technology and life sciences. This has created the kind of clustering of minds and money that made Silicon Valley so successful. The Ontario Venture Capital Fund has $750 million to invest in Ontario-based companies. With incentives like these, tech start-ups could start turning away from Silicon Valley because of location-based funding like in Toronto.
The entire nation of Ireland is trying to draw corporations into its borders with tax incentives. With a mere 12.5% corporate tax rate, the largest players in the tech world, such as Google, Facebook, and Yahoo, have put down roots in Dublin. To encourage new business growth, the government of Ireland created Enterprise Ireland to create jobs. Like Toronto, the combination of government funding and private firms has yielded a major hub for tech companies in Europe.
The sheer

And in other technology news
(CNN)— The invention of guns took warfare to a whole new level. Later, airplanes radically changed it again. Now, experts say another big shift is coming, led by energy weapons, including lasers.
The U.S. Air Force Research Laboratory, or AFRL, said it's on track to demonstrate a working laser weapon on a fighter jet by 2020.
"It really is a national tipping point," said Kelly Hammett, chief engineer for the AFRL's directed energy directorate. "We see the technology evolving and maturing to the stage where it really can be used."
Arming larger planes with laser weapons has been possible for years.
But the more difficult challenge is to create lasers small, accurate and powerful enough for fighter jets, Hammett said. The g-forces and vibrations of near supersonic speeds make that tough. Hammett said he thinks those hurdles can be overcome within five years.

Part two
Well, yeah. Scientists say it's theoretically possible to extract CO2 from the air and turn it into materials for buildings and clothes and other everyday stuff.
But wait, it's not quite time to put on our party hats and celebrate. There are a couple of problems that have to be solved first.
1. The process would be very expensive
2. Sucking all this CO2 out of the air creates a logistical problem: Where will we put it?
"What people don't grasp is the sheer size," said Dr. Klaus Lackner, director of Arizona State University's Center for Negative Carbon Emissions. "If you drive a car, you put out about a pound of CO2 per mile. Per person, we put out 15 tons of CO2 per year." There are limits, Lackner said, to how much CO2 we can capture and store.
Assuming that problem will be figured out eventually, Lackner and other ASU scientists are developing a machine that can pull CO2 out of thin air.
A concept drawing for the machine looks like a huge box, with a big sail attached to it. Inspired by trees, these sails act as the "leaves" of ASU's machine. The sails are made of plastic resin. As air flows over the plastic resin sails, they grab CO2 and hold on to it.
CO2 binds to the plastic when the material is dry. To release the CO2 from the plastic, you have to get it wet. That's how the CO2 will be harvested from these machines -- either for immediate use, or to be put into storage. CO2 also should be captured at fossil-fuel burning power plants, Lackner said.
In Massachusetts, urban design group SHIFTBoston is waiting for Lackner to fully develop his carbon-scrubbing resin so it can be used to create "Boston Treepods" -- synthetic, solar-powered devices that would scrub CO2 and provide light at night.
For now, ASU's device is being developed for use in greenhouses, to feed plants. Plants need CO2 to grow. "I don't think that's solving the climate problem, but it demonstrates that the technology works," said Lackner. If it proves itself, maybe someday machines li