Global demand for meat is growing, but animal agriculture has a significant carbon footprint. Could cultivating steaks, nuggets and sushi in a lab be a solution? (This episode has been republished and updated).

Climate fiction has become a significant cultural phenomenon, reflecting the urgency of the climate crisis and the need for creative responses to this global challenge. But how does it affect the consumer and is it doing more harm than good?

Cli-fi is growing increasingly popular as the climate crisis deepens. But could this mainly dystopian genre play a constructive role in tackling the challenge of global warming?

The German town of Andernach uses its public spaces to grow fruit, vegetables and herbs that anyone can pick free of charge. It's also a social project that has given some residents a new purpose in life. So what would it take to turn your home town into an edible one? (This episode has been republished and updated)

Supermarkets stock thousands of food products flown in from all over the world. And we've become used to this bounty of choice, often at the cost of the environment. But what is driving this excessive food consumption and how can we make better food choices? (This episode has been republished and updated).

Machines that can outsmart humans are the stuff of sci-fi novels. But some in the tech industry believe that if rapid advances in AI continue, there could someday be systems that attain — or surpass — human intelligence. Philosopher Nick Bostrom shares his thoughts on what that would mean for our species and some of the ethical questions that should be settled before we reach that threshold.

Artificial intelligence has tremendous potential to help us reduce our greenhouse gas emissions. At the same time, the technology itself has a big carbon footprint, and in some cases it's being used to accelerate activities that make climate change worse.

The field of artificial intelligence is growing fast. Not only is it bringing profound changes to the way we live and work, it's also proving to be a powerful tool in the fight against climate change.

The impacts of climate change are making us sick and claiming the lives of 13 million people every year. According to the World Health Organization, climate change is the single biggest health threat humanity faces. So what does it mean for our health if we fail to meet our climate goals and what can we do about it? (This episode has been republished and updated).

Ahead of World Water Day, we look at how the Rhine was transformed from a heavily polluted and stinking river into a clean waterway. Today, it supplies over 30 million people with high quality drinking water. But new threats are emerging for Germany's longest artery. (This episode has been republished and updated).