Tankers of 100,000 dwt and less can be crude-oil ("dirty") carriers or product ("clean") carriers.
"People have this image of him as this snake-oil-dirty, secretive guy, but in his soul he's a history professor," Surnow said.
For example, shortages of cheap coal led to the use of pricey fuel oil or dirty diesel for electricity generation; as bottlenecks in the coal system ease, that oil use will disappear.
It takes up to four barrels of water to generate one barrel of tar-sands crude, and 20% of Canada's natural gas (a clean fuel) is used to produce oil (a dirty one).
Of course, the shouting, the smoking oil, the dirty tables and the long days are all things that immigrants of Mr. Cheng's generation hoped their children would leave behind.
Even if they were model corporate citizens, many people would still resent the idea of any industry profiting from the provision of a basic necessity.Third, if oil is dirty, politics is even more so.
And the unconstrained expansion of energy-intensive industries creates greater dependence on imported oil and dirty coal, meaning that environmental problems get harder and more expensive to address the longer they are unresolved.
Do not reuse dirty oil, blackened oil, or oil that has been used in an iron or copper pots.
The dirtier the energy source, like coal and oil, the dirtier its electric cars are.
The pipeline would worsen climate change by facilitating the release of massive amounts of carbon from tar sands oil, the dirtiest oil on the planet.
