Ivory Coast's soldiers patrol on the road where UN soldiers were killed last week, following an attack in the southwest, close to the border with Liberia in Para on June 17. Seven Niger troops, 10 civilians and at least one Ivorian soldier were killed in the June 8 attack while patrolling villages south of the small town of Tai, near the Liberian border, the worst attack on ONUCI since its 2004 deployment. The zone has been prone to unrest for the past year, with bloody operations blamed in a recent report by Human Rights Watch on forces loyal to former president Laurent Gbagbo, whom the New York-based non-governmental organization accused of recruiting child soldiers.

A burnt vehicle wherein UN soldiers were killed last week, following an attack in the southwest, in Ivory Coast near the border with Liberia.

The population of Tai collect water distributed by the United Nations peacekeepers in western Ivory Coast near the border with Liberia on June 18. The area has been hit by a series of attacks in recent weeks, killing at least 22 people, including seven United Nations peacekeepers. Ivory Coast has said the attacks were carried out by Liberian mercenaries and pro-former president Laurent Gbagbo Ivorian militias who crossed over from Liberia.

Left: Sherry Vargson, who leased the mineral rights under a portion of her farm to the gas company Chesapeake Energy, illustrates her assertion that methane has leached into her well water by lighting the water on fire as it pours from her kitchen sink in Granville Summit, Pennsylvania, March 8.
Right: Ray Kimble shows the discoloration in a gallon of water he says came from his well in Dimock, Pennsylvania, March 8.

Ray Kimble fills up a 500 gallon water tank, called a buffalo, with fresh water which he will then distribute daily to neighbors whose water is non-potable near Dimock, Pennsylvania, March 8.

Support trucks for hydraulic fracturing are seen in the reflection of a car's side mirror outside Dimock, Pennsylvania, March 9. Heavy gas drilling trucks have caused so much damage to local roads that communities are requiring gas companies to bond the roads, and thus reimburse the towns for asphalt repairs.

Anti-fracking protestors concerned about natural gas development in the Marcellus Shale gather outside the Marcellus Midstream Conference and Exhibition, which promotes the development of infrastructure needed to transport and process natural gas, at the David Lawrence Convention Center in downtown Pittsburgh, Pa., March 20.

A hydraulic fracturing drill rig at dusk near Tunkhannock, Pennsylvania, March 9. The drilling practice requires injecting huge amounts of water, sand, and chemicals at high pressure thousands of feet beneath the earth's surface to extract reserves of natural gas.

A water-vendor collects water in jerrycans to sell on March 22, 2012 in the Mathare slum, Nairobi, where a water shortage continues to bite on World Water Day.

Bottles of water spell the word "Steak" during a demonstration for the World Water Day near the Eiffel Tower in Paris March 22, 2012. The word "Steak" is made from bottles representing 1,500 liters of water, the equivalent needed to produce a 100 grams steak.

A stray dog walks, as herons sit on the dirt-littered River Brahmaputra in Gauhati, India, Thursday, March 22, 2012. According to U.N. estimates, more than one in six people worldwide do not have access to 20-50 liters (5-13 gallons) of safe freshwater a day to ensure their basic needs for drinking, cooking and cleaning.

An Indian bathes in the River Tawi, as buffaloes walk past in the background in Jammu, India, Thursday, March 22, 2012.

Indian women fill containers with drinking water from a government water supply tanker at their residential colony in Hyderabad on March 22, 2012.

A Kashmiri woman carries water utensil filled from a water tanker on the outskirts of Srinagar, the summer capital of Indian Kashmir, 22 March 2012.

A boat is stranded on dry land along the Danube river bank in Belgrade on Dec. 2, 2011. Record low water levels have pushed up power prices across the Balkans and may force local utilities to further boost expensive power imports to meet demand.

Vessels carrying more than 1,000 tons were blocked in this area of Belgrade earlier this week because the water level was lower than normal. For river traffic to resume water levels would have to rise by at least 19 inches, but meteorological services forecast no rain in the coming days.

A farmer takes water from a mostly dried-up pond to soak his vegetable field on the outskirts of Yingtan, China, on Dec. 10, 2007.

Two-year-old Saghar, a flood victim, takes a bath in a relief camp in Sukkur, Pakistan, on Sept. 7, 2010.

A woman carries water she drew from a pool of a drying tributary of the Amazon River as the season drought worsens to one of the worst in recent years, in Parana do Paraua, Brazil, on Nov. 24, 2009. After a rainy season that caused some of the worst flooding in recent history, the seasonal drought that followed proved to be especially bad as well.

People gather to get water from a well in the village of Natwarghad, India, on June 1, 2003, in the midst of a severe drought. Dams, wells and ponds went dry across the western and northern parts of Gujarat, forcing people to wait for hours around village ponds for the irregular state-run water tankers to show up as the temperature soared to over 110 degrees.

An Afghan man pushes a hand cart with water containers near a public water pump in Kabul on Jan. 13, 2010.

A resident shows the water she gets at her home in a poor neighborhood in Mexico City on Dec. 17, 2009. A lack of rainfall and the growing needs of a thirsty capital city full of leaky pipes is draining the many lakes that once covered Mexico City's vast urban plain. City residents know their water by the brownish color as it leaves the spout.