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Articles on Oceans

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Ocean sediments in South Africa provide evidence of climate variation going back 270,000 years. Rogan Ward/Reuters

Marine sediments unlock secrets about climate change in South Africa

Marine sediments provide evidence of climate variability in South Africa going back 270,000 years. These changes correspond with changes in the archaeological record of the country.
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.
A portion of the East Antarctic Ice Sheet, called Wilkes Land, flowing into the ocean. Michael Hambrey/Glaciers online net

How ice sheets collapse: a lesson from the past

The way ice sheets respond to global warming may be more predictable than previously thought
Microbes can act as canaries in the coalmine for ocean pollutants such as sewage. Ne0Freedom/Wikimedia Commons

Microbes: the tiny sentinels that can help us diagnose sick oceans

There are more bacteria in the ocean than stars in the known universe. New genetic techniques are letting us use microbes as early warning systems for oceans in trouble from pollution and other stresses.
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.

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