Ancient Trash Solves Magnetic Mystery?

Turns out, a chunk of 3,000-year-old copper slag (basically ancient trash) just flipped what we know about Earth’s magnetic field. Scientists found a wild magnetic spike in this old artifact, hinting that our planet’s protective field has had some crazy mood swings before—and might be weakening now. The kicker? These magnetic secrets are hidden in relics from lost civilizations, and we barely have the tech (or funding) to dig them all up. Wild, right? #History #EarthScience #MagneticField