Earth Day is an annual event held on April 22 to celebrate the environment and support environmental issues. By focusing on air pollution on this week's cover story, Nikkei Asia is adding its voice to a global call -- to world leaders, innovators, industry and investment leaders and influencers -- to take concerted action and find better solutions to restore our planet.
BANGKOK -- Chiang Rai is among Thailand's most glorious provinces, with its rolling hills, forests, elephant camps, sparkling waters and top-quality farm produce. At its northernmost point is the confluence of the mighty Mekong River, flowing down from China, and the smaller, winding Ruak River. These form the Golden Triangle where Thailand, Laos and Myanmar meet, infamous for its historical links to the opium trade.