They fear the last Irrawaddy dolphins could die off as they move into Laotian waters to escape environmental havoc caused by the building of the Don Sahong Dam.
Mist cannons are often used to tamper with pollution monitoring equipment, as local officials try to meet environmental clean-up targets.
The protest brings to 146 the number of self-immolations by Tibetans calling for freedom in China.
Chinese students overseas are calling for Kwon Pyong's release, but say they also run the risk of detention in doing so.
Some parliamentarians and civil society organizations oppose the move, arguing that it will not help the country’s peace process.
Residents of the Rason Special Economic Zone (SEZ) are making a killing on weed sales, which are legal in the isolated country.
Enriched by involvement in logging, provincial governors protect smuggling across the border, sources say.
Hopes rise that the ‘Kem Sokha Five’ will also be released, but opposition leader Sam Rainsy’s fate is cloudy.