Verizon is committed to reporting its carbon efficiency each year and has a goal of increasing its carbon efficiency by an additional 15 percent this year. "The information transmitted over Verizon's networks every day is already equivalent to 215 million copies of the Encyclopedia Britannica, and customers want more," said Jeremy Symons, senior vice president at the National Wildlife Federation. "It requires a lot of energy to deliver all that data. By setting a goal of a 15 percent carbon-efficiency improvement for 2011, Verizon is helping to minimize the carbon footprint of the digital age even as customers ask for more services." A Green Verizon Verizon has implemented a wide range of green initiatives, including adding more alternative fuel and hybrid-engine vehicles to its fleet, deploying more energy-efficient network equipment, hosting recycling and other green-awareness events, and launching a campaign to encourage customers to switch to paperless billing.