But much of air pollution is a solvable problem, and we should try to solve it".
Much of the pollution comes from tailings-a heavy-metal-laden mixture of rock and earth produced by this kind of mining - which are formed into giant (and colourful) man-made hills around the city.
The intensity of the fires throughout most of yesterday, combined with very light winds and a high pressure system, carried much of the pollution 2,750 metres (9,000ft) above an area stretching at one point from East Anglia to Salisbury Plain, in Wiltshire.
Street canyons refer to the effect created by high buildings lining a street, preventing much of the pollution escaping.
Wind and ocean currents tend to spread contaminants evenly over an area, but much of the pollution in the Artic seemed concentrated in specific ponds.
Given that the average person takes in 500 litres of air an hour, if the air you are breathing in is polluted, you can imagine how much of this pollution is going to be absorbed," he added.
Much of this pollution is coming from our federally supported sugar industry, diverting polluted water from its natural flow south into the Everglades; instead, it is being diverted into the St. Lucie River and into the Indian River Lagoon.
Before the session ended, Mr. Ding said that regulators were having difficulty stopping polluters from damaging waterways used by fish farmers because much of the pollution occurred gradually.
It blames the state oil company, Petroecuador, for much of the pollution.
Officials say much of the pollution comes from neighboring areas, where emissions standards are lower and environmental policies virtually nonexistent.
