The Aztecs had a shining city on a lake, with canals, causeways and aqueducts – until the Spanish came. Mexico City is still suffering the consequences of their bad public health decisions.
From Nairobi to Los Angeles, pandemic lockdowns have cleared pollution from the skies. But those blue vistas may be temporary, and shutdowns aren’t slowing climate change.
A study of the social cost of carbon emitted by the shrinking fleet of Texan coal plants suggests that closing more of them down would be good for the climate and public health.
US national parks protect some of America’s most spectacular outdoor settings. But new research shows that ozone pollution levels in the parks are roughly as bad as in major cities.
New research is spotlighting personal care products, such as shampoos and skin lotions, as a significant source of chemicals that contribute to urban air pollution.
Air pollution could be the next battleground between California and the Trump administration, which is reviewing the Golden State’s special legal authority to regulate tailpipe emissions.
The city of Phalodi has set a temperature record for India, hitting 51°C. Until now, India’s smog problem has curbed extreme temperatures. But that could be about to change.
U.S. states need to put in place new ozone air quality standards, but how they are measured – based on peak ozone – doesn’t always best reflect a city’s overall air quality.
While Indonesia has taken steps to address the worst forest fires in living memory, a new palm oil alliance with Malaysia threatens to take a giant leap back.
The US has stricter ozone rules but the limits lag guidelines set by some other countries and more coordination in regulation is needed to address air pollution globally.
Volkswagen’s emissions cheat didn’t just anger owners and regulators; the cost to human health from violating air quality rules exceeds US$100 million.