Every few hundred thousand years, Earth’s magnetic poles flip, turning north into south and south into north. These ...
A perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the Earth’s magnetic field went haywire. The compelling 2021 study tells the ...
Trees are natural timekeepers, silently recording the passage of years in their rings, growth patterns, and changing foliage.
Einstein predicted the existence of gravitationally-warped rings of light in 1915. Now, a new one has been discovered just a ...
Fewer wildfires burn in North American forests today than in previous centuries, increasing the risk of more severe wildfires ...
Similarly, most living things produce records of their own existence in layered body tissues – often in the form of daily or ...
A study tracking rainfall patterns over thousands of years has found that more arid periods coincided with ages of dynastic ...