Auckland is the largest city in New Zealand and beneath it lies an equally sprawling network of lava caves.

Two broods of cicadas have started emerging simultaneously for the first time in 200 years. It's loud, messy and very interesting.

The tauros, a specially bred version of the long-extinct auroch cattle, is being introduced to Portugal's Côa Valley.

Sudan, the world's last male northern white rhino, became a conservation icon in his final year of life.

For decades, beavers were considered pests – trapped and shot on sight. Now the attitude towards nature's best engineers is changing, and farmers are working to bring them back.

From newborns saved by clean local power to the welcome return of an iconic lizard, our global reporters take stock of their most powerful moments in climate change of 2023.

Reindeer in Lapland have a number of important jobs this time of year – including helping the climate. By gobbling up shrubs, they help increase the reflectivity of snow and ice.

From Barbados to Belize, nations are beginning to swap debt for action on climate and conservation. But how far can this help without deeper reform of the global financial system?