The Ruak River meets the Mekong River (R) in the Golden Triangle
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Thai authorities say they have detected high arsenic levels in their waterways, which could pose a risk to aquatic life and people
The Thai government has proposed building a dam to prevent contaminated water from entering the country
An activist dressed as a "mutated fish caught in a fishing net" takes part in a protest against alleged arsenic poisoning in the Kok river due…
A mine in Myanmar, as seen from northern Thailand's Chiang Rai province
The Ruak river (L) meets with the Mekong River (R) in the Golden Triangle region, as pictured from northern Thailand's Chiang Rai province
A sprawling new mine is gouged into the lush rolling hills of northeast Myanmar, where civil war has weakened the government's already feeble …