What responsibility do rich, high-emitting countries have towards poorer, low-emitting countries? And will western citizens commit to coughing up for the climate crisis? As the world gathers in Egypt to hash out a plan to limit warming, we ask some important questions in today's show. Plus, how Cameroon is faring amid the energy crisis and what it means to ignore climate change when city-building.

This week on Living Planet, we're tackling fire and ice. As wildfires get worse in a warming world, we venture to the Western United States to hear what it's like to live with this smoky season every year. And ahead of the annual UN climate conference, we speak to Arctic ecologist, Sue Natali, about thawing permafrost and just how much it has in store for climate change.

The fashion industry has a lot to answer for — in 2018, it was responsible for 4% of the globe's total emissions. We delve into the world of fast fashion spurred on by social media and find out what happens to clothing you buy online and return. And in the Himalayas, we travel the historic Silk Road to learn what has become of the wool and textile industries that once sustained empires.

We hear how human activity transformed the mighty Araguari River in Brazil. We also visit Uganda's capital, which has been designated as a 'Tree City of the World', but also deals with extreme air pollution — are trees enough to clean its air? And speaking of trees... in South Africa, there's one so big, it's home to hundreds of birds and bats, and it even houses a cave within it!

We take a listen to how the climate crisis is affecting people's lives in different parts of Africa — from profound societal impacts in Maasai communities in Kenya, to the mental health challenges people are enduring in South Africa, to threatened tropical peatland ecosystems in the Cuvette Centrale basin in the DRC.

Climate scientists agree that the Arctic is ground zero for climate change. In the past, international teams of climate scientists have studied the sea ice here, but since the war in Ukraine, collaboration with Russia has been off-limits for Western researchers. The icebreaker and cruise ship, the Commandant Charcot, invited some of them on its maiden voyage to the North Pole.

How do sperm whales express their cultural differences? And what kind of music would birds and the wind make if you gave them the chance? In today's episode, we listen to some curious soundscapes, as well as hear from the climate scientists in Maryland trying to figure out if tidal marshes will continue to be carbon sinks, or if rising sea levels will turn them into dangerous carbon emitters.

Glaciers may only exist in certain cold corners of the world, but just like tropical rainforests, peatlands, wetlands and oceans, they support life on Earth hundreds of thousands of kilometers away; regulating ocean temperature, freshwater supply and our climate. In this episode we hear why ice is so integral to the planet as a functioning ecosystem, and some radical ideas to stop it from melting.

Can't sleep? You're not alone. A recent report highlights how much sleep we'll lose each year as temperatures continue to rise. Climate change is also drying up water supplies — from North America to East Africa to Europe. We travel the Rhine in Germany where low water levels are killing fish and halting trade. And in Mexico, residents rely on water deliveries due to drought and mismanagement.

This week on Living Planet, we explore a topic that's perfectly natural and something we do every day. Whether you use a squat toilet, a pit latrine or a water closet, humans need to go. But the ways we do so are often not very efficient, useful or good for the environment. So we're taking a look at the history of human excrement and some creative solutions to dispose of and repurpose our waste.