Friggin' Laser Beams, High Speed Data Transfer

Interesting article

http://www.gizmodo.com.au/2014/02/rooftop-military-grade-lasers-are-the-next-big-thing-for-high-speed-trading/

Right now, workers are installing lasers atop tall office and residential buildings in New Jersey to link two NYSE data centres, spread 35 miles apart. Other companies plan to install similar networks.