Oceans

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Coral affected by black band disease, Bahamas. James St. John/Flickr

Is global warming causing marine diseases to spread?

Infectious diseases are a normal part of ocean ecosystems, just as they are on land. But climate change is altering the oceans in ways that could make marine diseases spread farther and faster.
Gamba Grass is altering fire regimes in the Top End, threatening human life and property, natural assets including Kakadu and Litchfield National Parks, and compromising savanna burning programs. Samantha Setterfield

Setting priorities for environmental research is daunting when the questions are so huge

One of the Australian government's new research priorities is "environmental change". But can be hard to know how to tackle such huge and interlinked issues as climate change and species extinctions.
Too many fish in our seas, like this Pacific bluefin tuna, are being lost to over-fishing – but better management can help. Issei Kato/Reuters

If we want to keep eating tuna, the world needs to learn how to share

Over-fishing is a massive environmental and economic challenge. Fortunately, there are new solutions being trialled – including in a tuna hotspot in the Pacific.
Expect to see more ships on the horizon, as global shipping booms. But how well are we measuring and governing what happens at sea? Chris Phutully/Flickr

The challenge of managing Earth’s new economic frontier: our oceans

As the world's land-based economies struggle with around 2% GDP growth, the global marine economy – often talked about as "the blue economy" – is a bright light on the horizon.
The Great Southern Reef is unique, beautiful and contributes significantly to Australia’s culture and economy. However, few of us realise the magnitude and value of this gem right at our doorstep. T. Wernberg 2002

Australia’s ‘other’ reef is worth more than $10 billion a year - but have you heard of it?

The Great Southern Reef covers 71,000 square km and contributes more than A$10 billion to Australia's economy each year.
Acehnese fishers are among the quarter of the world’s population who live on the coast, and for whom climate-driven changes to the oceans would make life much harder. Hotli Simanjuntak/EPA/AAP Image

New report: the chance to rescue the world’s oceans from climate change is drifting away

Failing to stick to the world's agreed global warming limit of 2C won't just affect the atmosphere - it will play havoc with the oceans too, potentially ruining ecosystems on which much of humanity depends.

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