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Carbon dioxide flux over China, measured by NASA’s Orbiting Carbon Observatory-2 satellite. NASA

Satellites are giving us a commanding view of Earth’s carbon cycle

New data from a NASA satellite show in unprecedented detail the flow of carbon dioxide into the atmosphere. Future satellites should even be able to detect the signatures of individual power stations.
Wild horses, known as brumbies, in Australia. Shutterstock.com

Friday essay: the cultural meanings of wild horses

From 30,000-year-old cave paintings to The Man From Snowy River, wild horses have always been part of human culture. As Australia debates what to do with ‘brumbies’ in mountain environments, it’s time to reconsider their place.
Repeated ear infections and prolonged episodes of glue ear can result in permanent hearing loss. from shutterstock.com

My child has glue ear – what do I do?

Children with glue ear constantly struggle to hear at school, which may leave them frustrated, disengaged and unlikely to reach their full potential.
‘The call for Black lives to matter is fundamentally a call for peace. And peace must not be confused with the momentary quiet of submission.’ Annette Bernhardt/flickr

Black Lives Matter is a revolutionary peace movement

The peace and justice Black Lives Matter seeks require a fundamental transformation of a system that preys on and benefits from Black suffering.
Paul Uhlmann, Batavia 4th June 1629 (night of my sickness), 2017, oil on canvas (detail, one of three panels). Courtesy of the artist

Picturing the unimaginable: a new look at the wreck of the Batavia

The shipwreck of the Batavia and subsequent murders of 115 men, women and children have inspired many retellings. A new exhibition combines art and science to find new angles on an old tale.
Australia’s species, like this green python, are remarkable, and need far better protection. Jenny Martin

Australia’s species need an independent champion

Australia’s species, like this green python, are remarkable and need far better protection.
Staying physically active can play a big part in ageing well – and a well-designed neighbourhood helps with that. Maylat/shutterstock

Eight simple changes to our neighbourhoods can help us age well

Our ageing population presents several social and economic challenges, particularly for the health sector. Physical activity can tackle many of these.