28. Last Glacial Maximum of Sahul

60,000 to 45,000 years ago ... Signs of cultural change started to appear among hunter gatherers in Africa, leading to the end of the Middle Stone Age, a period that had lasted hundreds of thousands of years.Support the show 

12,800 to 11,700 years ago ... In the cold of the Younger Dryas, at the peak of megafauna extinction, the descendants of Clovis fragmented into a range of new cultures across North America.Support the show 

To mark the start of the UN Climate Change Conference, or COP26, taking place in Glasgow in the UK, we’re looking back at the history of our awareness of climate change with some of the scientists and activists who have been trying to solve this global crisis in recent decades ...

Professor James Hansen finally got US politicians to listen to his warnings about climate change in June 1988 after years of trying. He and fellow NASA scientists had first predicted global warming almost a decade earlier. Professor Hansen spoke to Ashley Byrne about his discover ...  Show more

“For the first time, we are forced to consider the real risk of destabilizing the entire planet,” says climate impact scholar Johan Rockström. In a talk backed by vivid animations of the climate crisis, he shows how nine out of 15 big biophysical systems that regulate the clim ...

The first international conference on the problems of the environment took place in Stockholm in 1972. It didn't concentrate on climate change but on the damage that was being done to animals and forests by the encroachment of humans and industry. It also highlighted some of the ...  Show more