Heterochromia, cold water therapy and time of death

Bianca Nogrady, a scientist and insightful communicator, fills in for Dr. Karl Kruszelnicki and tackles fascinating topics. She explores why trees are less prone to cancer than humans and discusses heterochromia, shedding light on its harmlessness and implications for evolution. The conversation heats up with a dive into how cold water therapy could influence health practices and ends with a thought-provoking debate about the ethical implications of artificial hearts on our definition of death. Plus, there's an alarming look at rising sea levels affecting Tasmania.