Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life with exciting storytelling and cutting-edge science. In the fourth episode of our third season, Into the Holocene, Professor Degroot tells the mind-bending story of the most spectacular environmental change of our geological epoch: the drying of the Sahara Desert. Although it seems timeless, as old as anything on Earth, the Sahara is actually a recent creation. At the start of the Holocene, most of it was a savannah, watered by rivers that have long since evaporated. People fished alongside hippos and crocodiles at archaeological sites now scattered across what are now some of the driest environments on Earth. How did people live in the "Green Sahara?" What did they do when the Sahara dried out? And is it possible that one of the world's first great civilizations - ancient Egypt - emerged as climate refugees fled the encroaching sand? This episode answers all these questions, and more.

Season three of The Climate Chronicles takes listeners on an immersive journey through the remarkable changes in climate and human culture that shaped the early history of the Holocene, the geological epoch in which humans became the dominant species on our planet. It zooms in on small communities and follows continental trends across thousands of years, all while unpacking the creative detective work that distinguishes the sciences of the past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science. In the third episode of our third season, Into the Holocene, Professor Degroot asks a simple question: when was the last time that the Earth was as hot as it is today? It may be a simple question, but it has a complicated answer - one that touches on everything from schemes for nuclear missile silos in the Greenland Ice Sheet at the height of the Cold War, to ancient computers in long-forgotten shipwrecks. Some evidence suggests that, in the early or mid Holocene, Earth was just as hot as it is right now, but other evidence tells the opposite story. The answer to this "conundrum" may be just within reach . . . and there are few more important riddles to solve in climate science.

Season three of The Climate Chronicles takes listeners on an immersive journey through the remarkable changes in climate and human culture that shaped the early history of the Holocene, the geological epoch in which humans became the dominant species on our planet. It zooms in on small communities and follows continental trends across thousands of years, all while unpacking the creative detective work that distinguishes the sciences of the past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science. In the second episode of our third season, Into the Holocene, Professor Degroot focuses on the archaeological site of Star Carr, where - just over 11,000 years ago - a group of families settled beside a small lake in what is now northern England. He takes listeners through the history of the archaeological and scientific research that has gradually revealed the extraordinary resilience of that little community in the face of the abrupt climate changes of the early Holocene. He reflects on what it might have been like to live in that community, then considers whether the resilience of people so unlike us, who lived so many years ago, can be cause for hope in a rapidly warming world.

Season three of The Climate Chronicles takes listeners on an immersive journey through the remarkable changes in climate and human culture that shaped the early history of the Holocene, the geological epoch in which humans became the dominant species on our planet. It zooms in on small communities and follows continental trends across thousands of years, all while unpacking the creative detective work that distinguishes the sciences of the past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change has shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science. In the season premiere of our third season, Into the Holocene, Professor Degroot investigates one of the greatest turning points in human history: the dawn of agriculture. Touching on everything from farming ants to dying Martians, he explores why our species waited nearly 300,000 years to cultivate crops and domesticate animals. He traces the story of the Natufians of the Levant, who stood on the brink of agriculture just as the Younger Dryas abruptly cooled and dried their world. Evaluating new evidence from pollen cores, speleothems, and archaeological sites, Degroot asks whether climate stress forced the first farmers into existence — or whether the stable warmth of the Holocene finally allowed their long experiment with cultivation to succeed. And he reflects on how the “Natufian wager” set our species on a path that would transform not just what it meant to be human, but also the destiny of a planet.

Season three of The Climate Chronicles takes listeners on an immersive journey through the extraordinary changes in climate and human culture that shaped the early history of the Holocene, the geological epoch in which humans became the dominant species on our planet. It zooms in on small communities and follows continental trends across thousands of years, all while unpacking the creative detective work that distinguishes the sciences of the past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change has shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science.

In the fifth and final episode of our second season, Escaping the Pleistocene, Professor Degroot reveals how an extraordinary rise in sea levels, about 10,000 years ago, overwhelmed ecosystems and human populations from Europe to Australia. He evaluates whether ancient myths and legends, including the story of Atlantis, preserve traumatic memories of early Holocene flooding. And he provides some broad reflections on the 100,000 years of human and climate history covered in this season. Season two of The Climate Chronicles is an immersive journey through the extreme climate shifts that influenced some of the most important events in the history of our species, from a wave of extinctions that transformed ecosystems around the world to the emergence of agriculture. The season also explores the history of the sciences that have revealed how climate change shaped our deep past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change has shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science.

In the fourth episode of our second season, Escaping the Pleistocene, Professor Degroot unpacks concepts such as radiocarbon dating and climate vulnerability to explore the ingenious and diverse ways in which our ancestors coped with the Pleistocene's final, and in many ways most spectacular, climate changes. He explains how everything from asteroid impacts to volcanic eruptions may have triggered the dramatic breakdown in ocean currents responsible for the most recent of these changes, a thousand-year cold snap known as the Younger Dryas. Finally, he surveys cutting-edge research that suggests we might soon face a similar breakdown—with profound implications for our modern world. Season two of The Climate Chronicles is an immersive journey through the extreme climate shifts that influenced some of the most important events in the history of our species, from a wave of extinctions that transformed ecosystems around the world to the emergence of agriculture. The season also explores the history of the sciences that have revealed how climate change shaped our deep past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change has shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science. In the third episode of our second season, Escaping the Pleistocene, Professor Degroot provides different explanations for what may be the ultimate climate change disaster: the extinction of our closest relatives, the Neanderthals, a hominin species that may have been as smart as us. He shows us how new computer models can help us understand the possible causes for the disappearance of the Neanderthals, and considers whether their extinction provides a warning for our future. Season two of The Climate Chronicles is an immersive journey through the extreme climate shifts that influenced some of the most important events in the history of our species, from a wave of extinctions that transformed ecosystems around the world to the emergence of agriculture. The season also explores the history of the sciences that have revealed how climate change shaped our deep past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.

Created, narrated, and produced by Professor Dagomar Degroot of Georgetown University, The Climate Chronicles reveals how climate change has shaped humanity’s past, and explores what history can tell us about the future of global warming. With clear, dramatic storytelling, each episode brings history to life through vivid storytelling and cutting-edge science. In the second episode of our second season, Escaping the Pleistocene, Professor Degroot explores how climate change influenced humanity's migration out of Africa, and into lands no other hominin had been to before. He unpacks why proving climate’s role in human migration (or any historical event) is so challenging. Then, he investigates the worldwide wave of extinctions that coincided both with humanity's dispersal around the world, and with the extreme climatic upheavals of the late Pleistocene. Season two of The Climate Chronicles is an immersive journey through the extreme climate shifts that influenced some of the most important events in the history of our species, from a wave of extinctions that transformed ecosystems around the world to the emergence of agriculture. The season also explores the history of the sciences that have revealed how climate change shaped our deep past.

For an episode trailer and a transcript complete with citations, as well as maps, graphs, infographics, and other images, visit TheClimateChronicles.com.