This week, we learned …
… why there were only four colors in a medieval rainbow. Read of the week!

From the Cotton MS Domitian A. i, fol. 28v, courtesy the British Library
… Black Friday sales numbers are useless and wrong.

Photograph by HebiFot, courtesy Pixabay
What are some contemporary updates to Black Friday?
… how geography helps explain poverty in Philadelphia.

Photograph by Derik Pinsonneault, courtesy U.S. Fish and Wildlife Service
How can urban planning help address the geography of poverty?
… Puerto Rico’s Arecibo telescope will be rescued.

Photograph by NAIC Arecibo Observatory, a facility of the NSF
What makes the Arecibo Radio Telescope so amazing?
… a Galapagos finch was caught in the act of becoming a new species.

Illustration courtesy National Geographic
As one Galapagos finch is adapting, learn how another is on the brink of extinction.
… London’s buses are caffeinated.

Photograph by Dun.can, courtesy Flickr. CC BY 2.0
What other public transportation options could caffeine up?
… modern life and Chinese imports are threatening a centuries-old Bedouin tradition.

Photograph by יאיר צפורי, courtesy Wikimedia. CC-BY-SA-4.0
… thunderstorms trigger nuclear reactions.

Photograph by Walter Meayers Edwards, National Geographic
Help forecast a thunderstorm with our great “Extreme Weather” interactive.
… learning to code will eventually be as useful as learning Greek.
Yeah, that’s not what most people want to hear. Find out why.
… there’s an ancient link between mastodon poop and pumpkin pie.

Illustration by Charles R. Knight, courtesy Wikimedia. Public domain
Would modern-day mastodons snack on pumpkins?
… this gorgeous infographic may help you identify every single cognitive bias.
Courtesy of: Visual Capitalist
How can elementary schoolers uncover their own cognitive bias? Our educators have some ideas!
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