Linking cat domestication to ancient cult sacrifices, and watching aurorae wander
Apr 17, 2025
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David Grimm, Online News Editor for Science Magazine, examines the intriguing connection between an ancient Egyptian cult that sacrificed cats and the domestication of these beloved pets. Agnit Mukhopadhyay, a research affiliate at the University of Michigan, discusses a fascinating magnetic pole shift that occurred 41,000 years ago, its environmental implications, and how it might affect us today. Together, they unravel the intersections of animal history and Earth's magnetic mysteries, shedding light on our past and future.
New evidence suggests that while ancient Egypt is linked to cat domestication, earlier sites in the Mediterranean may predate it significantly.
Research on Earth's past magnetic pole excursions reveals profound effects on atmospheric conditions, potentially impacting early human settlements and current technology.
Deep dives
The Origins of Cat Domestication
New research suggests that while ancient Egypt has long been regarded as the birthplace of domestic cats, evidence indicates that their domestication may have occurred earlier in the Mediterranean region. Studies have revealed the burial site of a human and a cat in Cyprus, dating back about 9,500 years, which predates ancient Egyptian civilization. This has led to theories that cats began to self-domesticate by following early farmers who stored grain and attracted rodents, benefiting from the relationship. However, recent genetic analyses show that the cats associated with the Cyprus find are not direct ancestors of modern house cats, leading researchers to reaffirm Egypt's significance in the domestication timeline, particularly through the large-scale breeding practices tied to the cult of Bastet.
Magnetic Pole Excursions and Their Impacts
Approximately 41,000 years ago, Earth experienced a significant magnetic pole excursion, during which the magnetic field strength reduced dramatically. This reduction lasted for about 300 years, leading to various potential consequences for life on Earth, including alterations in atmospheric conditions and increased exposure to cosmic radiation. Research indicates that during this period, auroras might have become visible at much lower latitudes, possibly affecting early human settlements. This fluctuation in the magnetic shield may have also impacted the ozone layer and the overall climate, leading to shifts in how humans, including the Neanderthals, adapted to their environments.
Potential Modern Implications of Magnetic Changes
As the Earth's magnetic field continues to show signs of weakening, with a decrease of about 10 to 15% over the last century, scientists are concerned about the implications for modern technology and life. A weakened magnetic field may allow more solar and cosmic particles to reach the surface, potentially disrupting satellite operations and other forms of technology reliant on stable magnetic conditions. The historical context provided by past excursions helps researchers understand current trends and the possible frequency and severity of future magnetic changes. While the immediate risk may not be critical, the long-term effects of these magnetic fluctuations require ongoing study to mitigate potential disruptions.
First up on the podcast, Online News Editor David Grimm joins host Sarah Crespi to talk about how an Egyptian cult that killed cats may have also tamed them.
Next on the show, we hear about when the aurorae wandered. About 41,000 years ago, Earth’s magnetic poles took an excursion. They began to move equatorward and decreased in strength to one-tenth their modern levels. Agnit Mukhopadhyay, a research affiliate at the University of Michigan, talks about how his group mapped these magnetic changes, and what it would be like if such a big change took place today.
This week’s episode was produced with help from Podigy.