Explainer: Role of the Amazon in global climate change

Fires across the Brazilian Amazon have sparked an international outcry for preservation of the world*s largest rainforest. Here's a look at the role the Amazon plays in regulating the world's climate:

Giant Antarctic sea spiders weather warming by getting holey

Scientists have wondered for decades why marine animals that live in the polar oceans and the deep sea can reach giant sizes there, but nowhere else. University of Hawai'i at Manoa zoology Ph.D. student Caitlin Shishido, ...

Global ocean de-oxygenation quantified

Oxygen is an essential necessity of life on land. The same applies for almost all organisms in the ocean. However, the oxygen supply in the oceans is threatened by global warming in two ways: Warmer surface waters take up ...

Acidification and low oxygen put fish in double jeopardy

Severe oxygen drops in the water can leave trails of fish kills in their wakes, but scientists thought adult fish would be more resilient to the second major threat in coastal waters: acidification. A new study published ...

Widespread loss of ocean oxygen to become noticeable in 2030s

A reduction in the amount of oxygen dissolved in the oceans due to climate change is already discernible in some parts of the world and should be evident across large regions of the oceans between 2030 and 2040, according ...

Cells starved of oxygen and nutrients condense their DNA

Scientists at the Institute of Molecular Biology (IMB) have been able to see, for the first time, the dramatic changes that occur in the DNA of cells that are starved of oxygen and nutrients. This starved state is typical ...

Backswimmers use buoyancy aid like a gill

Ever since he can remember, Karl Jones has been fascinated by the animals that live in streams. 'I grew up next to a river in the Adelaide Hills where I spent many hours catching the creatures that live there', he recalls; ...

Warmer, lower-oxygen oceans will shift marine habitats

Modern mountain climbers typically carry tanks of oxygen to help them reach the summit. It's the combination of physical exertion and lack of oxygen at high altitudes that creates one of the biggest challenges for mountaineers.

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