Guest researcher, an expert on the Salem witch trials, debunks the LSD theory and discusses the true causes of the hysteria. The podcast also explores the science behind ancient Egyptian mummification, emphasizing the controversy around their display today.

A researcher captures air from the Amazon rainforest, finding alarming clues about its decline. They discuss measuring carbon dioxide levels, the impact of climate change and deforestation on the southern Amazon, and the urgent need to stop deforestation.