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"Tin Hats" Return, 1915

Reported in Scientific American , this Week in World War I: November 27, 1915 Between the late 1700s and 1915, helmets were worn by soldiers mostly for reasons of aesthetics.

STAFF 23 minutes ago — Dan Schlenoff

My Love Affair With Relativity

I was introduced to the Einstein field equations three decades ago as a naïve undergraduate—and was smitten at once by their beauty and simplicity

STAFF November 25, 2015 — Mark Alpert

Rumors of Mount St. Helens Being Extra Explodey Have Been Greatly Exaggerated

I'm so sorry if any bubbles get burst by this news, but Mount St. Helens isn't really more explosive than we thought. She's still pretty much the same. I mean, yeah, she'll erupt again. She's a young and active volcano. She has some growing to do. We might even get to see some hawt dome-building activity in our lifetimes, if we're really lucky. But she's most probably not going to suddenly become a supervolcano and wipe out Washington State.

November 24, 2015 — Dana Hunter

Black Friday: The Jury is Still Deliberating

Halloween decorations have been taken down, costumes have been stowed away and all of the candy corn has been eaten. Americans are now preparing for their next major holiday—Black Friday.

STAFF November 24, 2015 — Wendy De La Rosa and Dan Ariely

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