Our Broken Planet

Surveys show that most of us are really worried about climate change and we want something to be done. But what? This series, we've explored many ways in which nature is changing in response to human activity and the dangers posed to people and planet as a result. In this final episode, Tori and Khalil explore how people are taking action in the face of the planetary emergency. Alo

A more sustainable future lies within reach. One where human societies are powered by wind and solar energy, leaving behind dirty, climate-changing fossil fuels in the past. Sounds good right? But with many tonnes of rare earth metals needed to manufacture just one wind turbine, switching to this greener way of life likely means more mining – and lots of it – at least in the s

Nigeria has some of the highest levels of unhealthy air across the African continent – a leading cause of inflammatory illness and premature death. Could its huge and growing cohort of young people have the solution? Tori & Khalil head to the “Giant of Africa” to find out how one of the world’s fastest growing nations – by economy and population – is dealing with rapi

As modern human societies have tried to dominate and organise nature, we have been interacting with other species in some dangerous ways. From encroaching on the territory of wild creatures, to industrially farming other species in unnaturally cramped conditions, human actions are increasing the likelihood of animal nasties jumping the species barrier to infect us. Tori & Khalil as

What’s brainless, heartless, eyeless and thrives in a warming ocean? Hint: it’s wobbly and it could be coming to a dinner plate near you. Tori & Khalil investigate the effects of rising sea temperatures, from changing food sources to the perilous state of coral reefs – home to one quarter of all marine species. They’re joined by scientists and campaigners to help explain th

Breathe in. Breathe out. The oxygen flowing through your body is the result of photosynthesis: the natural process through which living things convert sunlight into energy. About 30% of land-based photosynthesis happens in tropical rainforests: the lungs of the earth. Rainforests are also great at sucking up excess carbon from the atmosphere- something we know we’ve got to do

We all know that plastic isn't great for our planet. But how much do scientists really know about how it's affecting nature - including our own species? Tori and Khalil try to get their noodles around 'nurdles', the tiny plastic pellets that are used to manufacture all manner of everyday objects, discovering that millions are ending up in our oceans, with unknown long-term conseque

What is a glacier? And what happens when they melt? Glacier ice is the world’s largest freshwater reservoir. About 1 in 5 people depend on them as their main source of drinking water, as do countless animals and plants. As they melt, it's a boom time for nature, with plenty of water to go around. But what happens if glaciers disappear completely and the water stops flowing ? To

Are we living in a new age of fire? What would that mean for people, plants and animals? Take a trip back in time to find out how our planet's history has been shaped by fire, and peer into the future as we ask how nature will adapt to a new era shaped by flame. Tori and Khalil search for answers from nature, science and activism. Along the way, we'll ask: -How did a fire in

How much are sea levels rising by? What does it mean for us and for the generations to come? And what can we do about it? Take your ears on a round-the-world trip, from the icy polar north to the lush tropical paradise of the Marshall Islands, to find out how we got here and ways to fix it. Along the way, we'll ask: -Is Greenland turning into Swiss cheese? -Who is most at r