neco pro odlehceni
Ancient relic points to a turning point in Earth's history 42,000 years ago
https://phys.org/news/2021-02-ancient-relic-earth-history-years.html
"Earth's magnetic field dropped to only 0-6 percent strength during the Adams Event," says Prof. Turney.
"We essentially had no magnetic field at all—our cosmic radiation shield was totally gone."
While the magnetic poles often wander, some scientists are concerned about the current rapid movement of the north magnetic pole across the Northern Hemisphere.
"This speed—alongside the weakening of Earth's magnetic field by around nine percent in the past 170 years—could indicate an upcoming reversal," says Prof. Cooper.
"If a similar event happened today, the consequences would be huge for modern society. Incoming cosmic radiation would destroy our electric power grids and satellite networks."
Prof. Turney says the human-induced climate crisis is catastrophic enough without throwing major solar changes or a pole reversal in the mix.
"Our atmosphere is already filled with carbon at levels never seen by humanity before," he says. "A magnetic pole reversal or extreme change in Sun activity would be unprecedented climate change accelerants.
"We urgently need to get carbon emissions down before such a random event happens again."