As climatologists closely monitor the impact of human activity on the world's oceans, researchers at the Georgia Institute of Technology have found yet another worrying trend impacting the health of the Pacific Ocean.
A new study finds that oil sands operations, a major source of oil production in the last several years, emit very high levels of a critical class of air pollutants and pose risks to health and climate.
Over 80 percent of the world's city dwellers breathe poor quality air, increasing their risk of lung cancer and other life-threatening diseases, a new World Health Organization (WHO) report warned Thursday.
Authorities announced on Tuesday new measures to combat a recent increase in air pollution in Mexico City, as officials reported an increase in related ailments such as asthma.
Pedestrians took over the Champs-Elysees on Sunday as part of a new program to ban traffic from the famous Paris avenue once a month.
The mayors of major cities from around the world are banding together to fight global warming by investing in public transportation and electric cars, planting trees and switching to solar energy.