Antarctic mountains could boost ocean carbon absorption as ice sheets thin
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Updates every hour. Last Updated: 24-Nov-2025 10:11 ET (24-Nov-2025 15:11 GMT/UTC)
Research led by polar scientists from Northumbria University has revealed new hope in natural environmental systems found in East Antarctica which could help mitigate the overall rise of carbon dioxide in the atmosphere over long timescales.
As Antarctica's ice sheets thin due to climate change, newly exposed mountain peaks could significantly increase the supply of vital nutrients to the Southern Ocean which surrounds the continent, potentially enhancing its ability to absorb atmospheric carbon dioxide, according to the research published in Nature Communications.
An international study published today in Communications Biology has used unique coral reefs in Papua New Guinea to determine the likely impact of ocean acidification on coral reefs in the face of climate change.
Oceans are becoming more acidic as they absorb carbon dioxide from the atmosphere, and that acid will dissolve coral limestone. But it’s hard to predict what impact this will have on whole ecosystems from studies using aquariums and models.
The research team, led by the Australian Institute of Marine Science (AIMS), studied entire coral reefs, locally enriched with CO2 that is seeping from the sea floor, near some of Papua New Guinea’s remote shallow submarine volcanoes.
Dr. Katharina Fabricius, a coral researcher at AIMS in Townsville and senior author on the paper, says the research has revealed which species can thrive under lifelong exposure to elevated CO2.
“These unique natural laboratories are like a time machine,” said Dr Fabricius.
“The CO2 seeps have allowed us to study the reefs’ tolerance limits and make predictions. How will coral reefs cope if emissions are in line with the Paris Agreement level emissions? How will they respond to higher CO2 emissions scenarios?”
Native Australian animals range from high-hopping kangaroos to fast-running emus – but clever little bettongs also have a special ability to find and eat the food they love.
Flinders University researchers have discovered the secrets behind a superpower of these tiny relatives of kangaroos which allows them to crack open seeds that would break the jaws of most animals. They hope the research will help conservation efforts, including finding suitable locations to reintroduce populations severely impacted by predation and habitat loss.