sewage

An Afghan refugee girl, looks at men trying to clear sewage paths so rainwater can drain, in an attempt to avoid flooding during a heavy rainfall, in a poor neighborhood on the outskirts of Islamabad, Pakistan, Tuesday, March 11, 2014. For more than three decades, Pakistan has been home to one of the world s largest refugee communities: hundreds of thousands of Afghans who have fled the repeated wars and fighting their country has undergone.

Muhammed Muheisen/AP

An Afghan refugee looks at men trying to clear sewage paths so rainwater can drain, an attempt to avoid flooding during heavy rainfall, in a poor neighborhood on the outskirts of Islamabad, Pakistan. For more than three decades, Pakistan has been home to one of the world’s largest refugee communities.

Pakistani men, who were displaced with their families from Pakistan's tribal areas due to fighting between the Taliban and the army, clear open sewage paths so rainwater can drain, in an attempt to avoid flooding during a heavy rainfall, in a poor neighborhood on the outskirts of Islamabad, Pakistan, Monday, Feb. 3, 2014.

Muhammed Muheisen/AP

Pakistani men clear open sewage paths in a poor neighbourhood on the outskirts of Islamabad, Pakistan, in an attempt to avoid flooding. The men and their families have been displaced from tribal areas because of fighting between the Taliban and the army.

Religious offerings from devotees and leftover wooden frames of Lord Ganesh idols pile up in the Yamuna river in New Delhi on September 20, 2013.  Considered one of the holiest rivers in India, the Yamuna River has been dying a slow death from pollution for decades despite the investment of millions of dollars to preserve its ecosystem. According to the Central Pollution Control Board (CPCB) which monitors the water quality of the Yamuna in Delhi, seventy percent of the pollution in the river is from untreated sewage while the remaining thirty percent is from industrial sources, agricultural run-off and domestic garbage.

Prakash Singh/AFP

Religious offerings from devotees and leftover wooden frames of Lord Ganesh idols pile up in the Yamuna river in New Delhi, India, on Friday. Considered one of the holiest rivers in India, the Yamuna River has been dying a slow death from pollution for decades despite the investment of millions of dollars to preserve its ecosystem