Africa has largely been ignored when it comes to official global air quality programmes. Yet low-income countries like many of those in Africa are particularly affected by air pollution.
As Australia joins a New York summit to discuss the UN Sustainable Development Goals, it still faces questions over whether it is meeting water standards at home.
Coal dust and oil can spread toxic chemicals hundreds of kilometres out to sea. But Australia's monitoring guidelines do not meet the standards used in countries such as the United States.
When it comes to reducing air pollution, scoring and ranking cities is neither accurate, nor productive.
You've heard of cap-and-trade schemes for greenhouse gases. Perhaps we also need one to limit the amount of fertiliser runoff onto the Great Barrier Reef.
A combination of factors – pollution, disease and overfishing – is harming corals but scientists have found clues to effective treatment by studying corals' microbiome.
Microplastics go largely unseen but are a scourge of the oceans. Filmmaker Jo Ruxton answers questions about the challenge of filming it.
Storms like those that lashed Australia's east coast flush pollution out to sea.
The city of Phalodi has set a temperature record for India, hitting 51℃. Until now, India's smog problem has curbed extreme temperatures. But that could be about to change.
Saving the world’s forests and oceans means putting an end to slavery run by criminal gangs.
Urbanisation exposes wildlife to new man-made stresses which affect species in a variety of ways.
Freshwater covers only 0.5% of the Earth's surface but is home to 10% of the world's lifeforms.
Indian Prime Minister Narendra Modi wants to bring 1.5 million toilets to the 600 million Indians without access by 2019. If he fails that could prove dangerous in an election year.
Australia still rests too heavily on its luck, and not enough on its brains.
This low-cost way of monitoring air quality is appealing, but there needs to be acknowledgement of their weaknesses as well as strengths.
Lead might not be in paint or gasoline anymore, but since it doesn't break down in the home or the environment it remains a problem throughout the U.S.
Children exposed to lead are at elevated risk for learning delays and academic issues.
The 2011 Japan tsunami illustrates how more marine creatures are crossing the oceans than ever before - and not all of them are friendly travellers.
Parents in three Australian states are being given misleading advice about the dangers of lead to babies and small children – including failing to warn pregnant women about miscarriage risks.
Conflicting evidence means it's tough to tell whether trees helping to clear the air, or if green is not as good as we thought.