Science
Nuclear Fallout in Whale Teeth Reveals Their Life Histories
Researchers have discovered a novel method to track the life patterns of whales by analyzing radioactive isotopes embedded in their teeth. These chemical signatures, which originated from mid-20th-century nuclear weapons testing, act as a chronological record of the animals' movements and environmental exposure. By examining these layers, scientists can determine where whales traveled and how their habitats changed over decades. This breakthrough provides a non-invasive way to understand the long-term behavior and migration habits of marine mammals, offering critical data for conservation efforts.