Black Sea: The oil spill from the tanker sinking continues spreading for three weeks
More than 30 marine mammals found dead after the sinking of two tankers in mid-December
Vietnam: Hanoi is the most polluted city in the world, authorities seek solutions
The government announced it will promote the use of more electric vehicles to address the issue
India: Toxic waste from the Bhopal tragedy transferred for disposal after 40 years
On December 3, 1984, a toxic gas leak from a factory killed over 5,000 people