Maiya May embarks on a journey across the United States, from the sunny shores of Florida to the icy expanses of Alaska, to explore climate tipping points – thresholds that lead to rapid and irreversible change. Discover how critical our climate systems are for our planet’s stability. Are these vital ecosystems already past their tipping point, or is there still hope to reverse the damage?

When is it time to leave your home? Maiya May visits Isle de Jean Charles, Louisiana, one of the first communities in the US to undergo a federally funded relocation due to climate change. She talks to resident, Chris Brunet, about his decision to move away from the island where his family has lived for generations.

Maiya explores the most deadly kind of weather, heat, in an unlikely place: Portland, Oregon. She revisits the 2021 heat dome, one of the most anomalous weather events recorded on earth. In order to understand why some urban areas are hotter than others, she travels to Medellín, Colombia. Then she visits the hottest city in the US, Phoenix, Arizona, to see how we can turn the temperature down.

Maiya May explores the growing extremes of droughts and floods and their impact on our food and water. She visits Tulare Lake, once a critical water reserve and cultural site for the Tachi-Yokut tribe, which has re-emerged after 150 years. Maiya learns about agriculture's challenges, the depletion of groundwater, and finds hope in innovative farming practices.

Maiya explores positive climate tipping points. She travels from Wyoming to Michigan and back to her hometown of Atlanta. In Cheyenne, she visits a supercomputer to see how climate systems are predicted and analyzed. In Michigan, she witnesses the end of a coal plant, marking progress in the global energy transition. Back in Atlanta, Maiya speaks with Dr. Marshall Shepard about climate challenges.