A recent study reveals that humans used sunscreen and clothes to protect themselves from deadly solar radiation 41,000 years ago. The research also sheds light on the search for extraterrestrial life and provides insights into how our planet’s magnetic field affects life.
In a study published in the University of Michigan, researchers combined historical data with advanced computer simulations to recreate the Earth’s geospace system during the Laschamps excursion. This natural phenomenon occurred around 41,000 years ago, when the planet’s poles began to reverse and its magnetic field weakened dramatically.
The results suggest that Homo sapiens used sun-blocking ochre and tailored clothing to protect themselves from solar radiation. These adaptations allowed early humans to thrive in environments where modern technology would struggle to survive. Neanderthals, on the other hand, may not have had access to these tools for survival.
The study’s findings also highlight the importance of our planet’s magnetic field for life. With a weakened shield, solar particles and cosmic radiation streamed into Earth’s atmosphere, bringing aurora to low latitudes and increasing UV exposure globally.
If such a magnetic excursion were to happen today, researchers warn that communication blackouts, satellite failures, and infrastructure disruption could be severe consequences.
The research also provides valuable insights for the search for extraterrestrial life. As lead author Agnit Mukhopadhyay notes, “Many people say that a planet cannot sustain life without a strong magnetic field.” By studying prehistoric Earth, scientists can gain a better understanding of exoplanetary physics and the conditions necessary for life to exist.
Overall, this study offers a fascinating glimpse into our planet’s history and highlights the importance of protecting ourselves from deadly solar radiation.
Source: https://interestingengineering.com/culture/homosapiens-neanderthals-sunscreen-clothes?group=test_b