Lord Smith urges the government to commit to long-term targets to remove almost all carbon pollution from electricity generation by 2030.

BBC: Cheap coal 'threatens UK pollution targets'

And besides, they say, the water from the Colorado River -- the city's main supply -- already has to be treated to remove all types of pollution.

CNN: San Diego hopes to recycle waste water

We are constantly innovating, figuring out new more efficient ways to remove heat from machines while reducing pollution.

FORBES: Google as a New Innovation Model (Or Not the 20% Time)

"We have to act quickly to remove them all for fear of causing water pollution, " Xu Rong, an environmental official, told state-run Global Times newspaper.

BBC: China fishes over 2,000 dead pigs from Shanghai river