Caroline Spry

How a stone wedged in a gum tree shows the resilience of Aboriginal culture in Australia

An Aboriginal tree on Wiradjuri Country is much younger than anybody thought.
Tasmania’s fires may have released mercury previously absorbed by trees. AAP Image

Mercury pollution from decades past may have been re‑released by Tasmania’s bushfires

Huon pines in Tasmania have locked up significant amounts of mercury pollution from the state’s mining industrial history. And that can be released back to the atmosphere in bushfires.
Places such as Berri were affected by Millennium Drought, caused by low cool-season rain. New materials and techniques are now being used to observe drought causes and water patterns in Australia’s history to help the future. Gary Sauer-Thompson/flickr

Recent Australian droughts may be the worst in 800 years

Australia has always suffered heat and flood, but a detailed seasonal rainfall reconstruction of the last 800 years shows the extremes are intensifying.

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