A man washes cattle in the Mekong river in Phnom Penh

 
A man washes cattle in the Mekong river in Phnom Penh
A man washes cattle in the Mekong river in Phnom Penh November 7, 2012. Laos held a "groundbreaking" ceremony on Wednesday for a $3.5 billion hydropower dam on the Mekong River that is opposed by environmentalists and neighbouring countries because of the possible impact on livelihoods, fisheries and agriculture. REUTERS/Samrang Pring