A view of the Los Angeles city skyline as heavy smog shrouds the city in California on May 31, 2015.           AFP PHOTO/ MARK RALSTON        (Photo credit should read MARK RALSTON/AFP/Getty Images)
What is in our air
01:15 - Source: CNN

Story highlights

Air pollution causes one in nine deaths worldwide

Air cleaners, face masks and cleaning your home can help reduce exposure

CNN  — 

More than 90% of the world’s population breathes in air that violates air quality guidelines set by the World Health Organization, increasing their risk of lung cancer and respiratory infections, but also conditions including stroke, cardiovascular disease and chronic obstructive pulmonary disease.

The situation has reached a tipping point, despite efforts to curb the issue. “People have tried,” said Sumita Khatri, co-director of the Asthma Center at the Cleveland Clinic. “But it’s continuing to be an ongoing problem.”

This week, air pollution alerts were issued in Sydney, Australia, due to an excess of ozone gas within the city. Annual air pollution limits have already been breached in London for 2017. Pollution levels became dangerously high in Paris at the end of 2016 and countries such as China continue to face ongoing concern over smog, which, at its peak, led to the shutdown of schools and factories.