Compact and easily overlooked, bar-tailed godwits make the longest known nonstop flight of any animal on Earth. Drew Rooke reports on the research that led to the amazing feat’s discovery – and that is changing much of our understanding of the science of these epic crossings. Narrated by Renee Garvin.

As part of the Ultramarine project we are republishing some paid content for free. This story was originally published in issue 99 of Cosmos print magazine, in July 2023. You can read more amazing long reads if you subscribe now.

In a remote archipelago off Australia’s Top End, scientists and Indigenous rangers are collaborating to gather knowledge about the region’s large marine animals, which are thought to be in decline. Story and photography by DAVID HANCOCK, narrated by HANNAH HARMS.

As part of the Ultramarine project we are diving into our archives and republishing some paid content for free. This audio content was created from a story originally published in issue 97 of Cosmos print magazine, in December 2022. You can read more amazing long reads if you subscribe now.

In the September 2022 Cosmos print magazine, Kate Evans looked at how the nautilus’s lineage made it through all five of Earth’s previous mass extinctions and asked can it survive the Anthropocene.

The article has been read by Renee Garvin and published for free as part of our Ultramarine project, which is funded by Mindaroo Foundation.