By analyzing the pottery from an archaeological dig near Jerusalem, scientists have learned that the geomagnetic field around the earth fluctuated wildly during early human civilizations —and the news isn't good for a world that depends on electrical grids and high-tech devices. Jeff and Anthony discuss magnetic fields, scientific sleuths, and Santa Claus.

GET BONUS EPISODES, VIDEO HANGOUTS AND MORE. VISIT: http://patreon.com/wehaveconcerns

Get all your sweet We Have Concerns merch by swinging by http://wehaveconcerns.com/shop

Hey! If you’re enjoying the show, please take a moment to rate/review it on whatever service you use to listen.

Here’s the iTunes link: http://bit.ly/wehaveconcerns And here’s the Stitcher link: http://bit.ly/stitcherwhc

Jeff on Twitter: http://twitter.com/jeffcannata

Anthony on Twitter: http://twitter.com/acarboni

Today’s story was sent in by Geneman67: https://arstechnica.com/science/2017/02/astonishing-geomagnetic-spike-hit-the-ancient-kingdom-of-judah/

If you’ve seen a story you think belongs on the show, send it to [email protected] or leave it on the subreddit:http://reddit.com/r/wehaveconcern