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The urban landscape is complex and ever-changing in cities such as Perth, but digital aerial photography can now monitor even the smallest changes. Wikimedia Commons

The planner’s new best friend: we can now track land-use changes on a scale of centimetres

Constant, complex changes in cities and mine sites are hard to monitor. Drawing on digital aerial photography, it's now possible to track land-use and vegetation changes in areas as small as 10-20cm.
Pregnant women in three Australian cities are not told that lead exposure during pregnancy is linked to miscarriage and early delivery. Flickr/Luca Montanari

Pregnant women and parents misled about dangers of living with lead pollution

Parents in three Australian states are being given misleading advice about the dangers of lead to babies and small children – including failing to warn pregnant women about miscarriage risks.
Could municipal biosolids be a trove of tiny treasure? Heather Lowers, USGS Denver Microbeam Laboratory

Mining for metals in society’s waste

Mining waste rock from historic mines or even treated sewage to find useful metals and minerals could be a sustainable way to meet demand for these finite resources.

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