Coal-fired power stations, metal smelting and vehicle emissions all pump mercury into the atmosphere.
Australia is the 16th-largest emitter of mercury in the world. A huge amount comes from coal power stations – and a new report argues our pollution guidelines are hopelessly lax.
A boy plays cricket among smoke in Karachi. Deaths from air pollution across the globe will increase as climate change accelerates.
A new study suggests climate change will cause changes to patterns of ground-level ozone and smog – two deadly pollutants set to increase deaths by about 260,000 worldwide by the end of the century.
Residents of high-density housing might value features such as balconies, but when roads get busy this increases exposure to pollution.
Many new housing developments are being built along busy roads and rail lines, but lack design features that would reduce occupants' exposure to harmful traffic pollution.
Adopting biodegradable bags will take a shift in mindset.
High costs, poor performance, a lack of manufacturing capabilities and local perceptions prevent biodegradable bags from taking root in Kenya.
New Delhi’s pollution is among the worst in the world. Each autumn, when crops are burnt and wind speeds are low, it risks rising to crisis levels.
Jean-Etienne Minh-Duy Poirrier
In November 2016, smog in New Delhi was 16 times above safe levels. An Indian researcher dug into the data to find out why, and how India can keep its capital breathing safely.
A boy jumps from a water pipe into a canal as temperatures soar in New Delhi. Access to clean and regular water remains a challenge for India’s capital.
Access to clean and regular water remains a challenge for New Delhi, a city that could easily tackle its water crisis with greater effort.
We don’t know what the car of the future will look like – but that’s no excuse to delay transport reform.
Australia needs to 'embrace uncertainty' on the future of transport, with flexible, holistically focused policy.
Reusing and recycling of plastic waste makes more sense for Kenya than a ban.
The plastic bag ban doesn't consider the impact it will have on Kenya's economy or consider other environmental alternatives.
Los Angeles Police Chief Charlie Beck, left, and Mayor Eric Garcetti pose next to an all-electric car in this 2015 photo.
AP Photo/Nick Ut
More than 200 mayors have committed their cities to stick with the Paris climate deal no matter what the US does. Electric vehicles offer a promising route to making good on that pledge.
Globalised drug manufacturing is adding to the problem of antimicrobial resistance.
Scientists know that many toxins, such as those found in cigarettes, cause most lung cancers, whose cells are depicted here. But isolating causes for other cancers is an ongoing effort.
What causes cancer? A scary truth might be that we have created an environment for it. An anthropologist's search for answers to her own diagnosis raises questions for all of us.
The climate crisis demands not only green technologies, but a completely different approach to economic development.
A proposed coal plant in Kenya would rely on imports for up to 10 years.
Kenya has abundant energy options like solar, and geothermal that are cheaper than coal. A proposed new coal plant could become a 'stranded asset'.
Harmful chemicals in shampoo and other personal products can cause real harm once they’re washed down the drain.
Regulation can't keep up with the thousands of harmful chemicals that wash down our drains. Rather, companies should take responsibility for their products – before they hit the market.
GDP as a measure of growth fails to account for damages caused to the environment by industrial activity.
Our approach to economic growth has done more harm than good and must be be replaced with more appropriate goals.
Humpback whales getting a feed.
Janie Wray/North Coast Cetacean Society
A new study shows that the way humpback whales choose their habitats is affected by humans.
Heavy gray smog blankets northeastern China, including Beijing and Tianjin, on Dec. 18, 2016 during a five-day air pollution ‘red alert.’
NASA Earth Observatory
New research shows that importing goods from low-wage countries has helped US manufacturers shift production to less-polluting industries, produce less waste and spend less on pollution control.
Changing concentrations of PM₂.₅ particles, modeled in January 2017 by Prevair.
Lille, Lyon, Grenoble, Paris ... In recent months, major French cities have experienced severe pollution spikes. How is this threat to health and the environment assessed?
Disruption of the thyroid hormones can prevent tadpoles from becoming frogs.
Research shows thyroid hormone, which is required for brain development in all vertebrates, is severely affected by chemicals present in our everyday cleaning products, clothing and cookware.
Bees have been living with the mysterious Colony Collapse Disorder for a decade.
It's a decade since US beekeepers first noticed that their bees were mysteriously dying. Now we know much more about Colony Collapse Disorder, raising hopes that we can turn bees' fortunes around.