Almost one in two hens in our Sydney study had significant lead levels in their blood. Similarly, about half the eggs analysed contained lead at levels that may pose a health concern for consumers.

In a new paper published in Nature Plants, we report on a natural secret that could ultimately be used to help plants thrive while using less water.

Australians are reeling from climate change impacts including more frequent and severe disasters – floods, droughts, searing heat and fires. These complex disasters are fuelling calls for managed retreats and debates about buying out at-risk properties.

Not only can touch provide a new way to follow the flow of water through plant cells, it may also deliver new possibilities for plant monitoring and care.

Imagine this fictitious scenario. The federal environment minister announces government approval for a large-scale penguin farm near Alice Springs.

Natural ecosystems are already struggling from land clearing, intensive agriculture, soil degradation and poor water management. Climate changes and related sea level rise are making this worse. It’s a mistake to think this won’t affect us.

To measure the speed of adaptive evolution in the wild, we studied 19 populations of birds and mammals over several decades. We found they were evolving at twice to four times the speed suggested by earlier work.

The modern-day space race has led to thousands of satellites being scattered through Earth’s outer orbits. If left unchallenged, these companies risk overpopulating an already crowded space environment – potentially pushing dark skies to extinction.

Mention the superb lyrebird, and you’ll probably hear comments on their uncanny mimicry of human sounds, their presence on the 10 cent coin, and their stunning tail. Far less known – but equally, if not more, impressive – is the Albert’s lyrebird.