Mark John Costello

Professor, Faculty of Biosciences and Aquaculture, Nord University

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Mark John Costello

In addition to the expansion of the calcite compensation depth, parts of the ocean in low latitudes are losing species because the water is getting too warm and oxygen levels are declining, both also due to climate change.

Wildlife & Biodiversity

As ocean surfaces acidify, a deep-sea acidic zone is expanding: Marine habitats are being squeezed

Mark John Costello

09 Jul 2024

3 min read

Photo: iStock

20°C seems the optimal temperature for life on Earth to thrive — what does this mean in a warming world?

Mark John Costello

16 Feb 2024

4 min read

Down To Earth

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