IELTS Practice Reading # Does Flying Harm ?
Source : http://content.time.com/time/world/article/0,8599,1654488,00.html
DOES FLYING HARM THE PLANET?
Given the rage (angry fury) that air travel can provoke ()in even the most tranquil ( )among us these days, it may be surprising (causing wonder)that riot ( )police aren’t a more regular feature at airports. But Sunday’s pitched (to set at a certain point)battle between roughly 500 environmental activists and a phalanx ( )of baton-wielding police at London’s Heathrow airport wasn’t about long lines, delays, lost luggage or missed connections. Instead, the protesters ( )— who had demonstrated outside Heathrow all of last week — were trying to draw travelers’ attention to the impact on climate change of the carbon gases emitted by the aircraft in which they fly. A placard ( )from one activist at Heathrow expressed it thus: “You Fly, They Die.”
Airplanes operate on petroleum fuel, which means they release large amounts of carbon dioxide when they fly. Commercial ()air travel is currently responsible for a relatively tiny part of the global carbon footprint —just 3.5% of total greenhouse gas emissions, according to the Intergovernmental Panel on Climate Change. But the unique chemistry of high-altitude jet emissions ( emitting)may produce an additional warming effect, while the explosive (tending or serving to explode)growth in air travel makes it one of the fastest-growing sources of carbon gases in the atmosphere. And unlike energy or automobiles, where carbon-free or lower-carbon alternatives ( )already exist, even if they have yet to be widely adopted, there is no low-carbon way to fly, and there likely won’t be for decades.