Sea ice responds to changes in winds and ocean currents, sometimes with origins thousands of kilometres away. NASA/Nathan Kurtz

Why Antarctica’s sea ice cover is so low (and no, it’s not just about climate change)

Antarctic sea ice cover fell to an all-time low recently and hasn't yet recovered. Why? The initial answers could lie in an unlikely place – the tropics.
Sydney’s Darling Harbour: popular but noisy and expensive. Here’s how we could do better to provide a safe place to work and play. from www.shutterstock.com

How Darling Harbour was botched (and could be reborn)

Cities around the world are redeveloping their waterfronts to be accessible and resilient to the effects of climate change. Here's where Sydney's Darling Harbour went wrong and what we can do better.
Someone’s too hot and someone’s too cold. Collage by The Conversation, combining images by Monika Wisniewska and Antonio Guillem/Shutterstock.com

Offices are too hot or too cold – is there a better way to control room temperature?

Everyone has a different ideal temperature at any given time. It could be more comfortable to monitor people's body temperatures and adjust heating and cooling in response.

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