A transcript of episode 5 of The Conversation Weekly podcast, including stories on the Arctic Ocean and new archaeological finds in Tanzania's Olduvai Gorge.
Plus, new discoveries about early humans in Tanzania's Olduvai Gorge. Listen to episode 5 of The Conversation Weekly podcast.
Microplastic pollution is a global issue, but where do they come from and how are they transported across the ocean? A new study finds polyester microfibres are common throughout the Arctic Ocean.
Whales are rediscovering their old haunts in the Arctic and Southern oceans after centuries of hunting.
Belugas use sound to communicate, navigate the dark marine environment and find food. But climate change is opening up Arctic waters to more sound, and could affect the health and survival of belugas.
Oceans 21 is a Conversation international series examining the history and future of the world's ocean.
The Arctic has been a remote place for much of its history. But climate change is bringing global problems and opportunities to its door.
The Laptev Sea is one of the Arctic's biggest nurseries of new sea ice in winter, but Siberia's record summer heat may have halted production.
Scientists find oceanic heat has overtaken atmospheric heat as the main cause of melting.
Polar regions may be becoming more profitable, but these "benefits" come with far more severe costs.
More than 600 experts will spend the next year drifting in Arctic waters to gain a better understanding of how climate change is affecting the region and how it can be fought.
The eastern Arctic and sub-Arctic marine areas of Canada are changing rapidly under climate change.
New shipping opportunities are opening up in the Arctic as sea ice continues to recede. But travel is still dangerous and the region isn't equipped to deal with more vessel traffic.
Since 2005, the Barents Sea has become too warm for sea ice to exist south of the Polar Front.
The recent Arctic Council meeting in Finland shows there's still avid interest in developing the Arctic. Some are arguing the entire region should be considered a 'global commons.'
Using baited cameras scientists have captured some of the first underwater video footage of the elusive Greenland shark.
The link between melting sea ice and extreme weather has been known for a while, but now it's happening further afield.
China has been very quiet in negotiations over fisheries regulations for the central Arctic Ocean. Why is the country's behaviour there so dramatically different from what it pursues in Antarctica?
Cold polar water can stop the Arctic sea ice from melting – but what happens if it warms up?
South Africa has the opportunity to benefit from its ocean economy. But to do that, the country needs to put better policies in place to counter ocean acidification.