Plus, an alternative to opioids; California's rare superbloom; and ice caves in the Alps.
|  | Monday, January 23, 2023 | | | | |
 | PHOTOGRAPH BY KIKE CALVO, NAT GEO IMAGE COLLECTION
| | Geneticists would like to set the record straight: Redheads are not going extinct.
The trait predates history. Scientists have found ginger Neanderthals and ancient, crimson-haired mummies. Now, after decades of research, we know how red hair evolved, the health consequences, and why the trait isn’t going anywhere.
Read the full story here.
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 | PHOTOGRAPH BY BRIAN DOWLING, GETTY IMAGES
| | | Who has the most fun? With redheads like Prince Harry and singer Reba McEntire, gingers are staying in the spotlight. Every year redheads from all over the world (like the one at top) travel to the Netherlands to celebrate Redhead Days, the world's largest redhead festival (attendees, above). Read more. | | | |
 | | PHOTOGRAPH BY RANDY OLSON, NAT GEO IMAGE COLLECTION | | | |
 | | PHOTOGRAPH BY SOLVIN ZANKL, NATURE PICTURE LIBRARY | | | Empire of the ants: Researchers recently discovered more than 500 ant species in ecosystems they shouldn’t be. Most of these invasive ants originate from the tropics and subtropics, setting them up to thrive as the world warms, Nat Geo reports. Argentine fire ants, for example, have already created a super-colony stretching from Portugal to Italy (an invasive fire ant, above). | | | |
 | | PHOTOGRAPH BY ROBBIE SHONE | | | A race against time: The world’s ice caves are melting faster than scientists can reach them, with critical information about our climate’s history washing away each season. Nat Geo Explorer Robbie Shone set out to photograph the formations before they disappear completely. Some ice cones he captured in the Austrian cave above were once 15 stories high. | | | |
 | | PHOTOGRAPH BY JUSTIN BENTTINEN | | | 2023 might be the year! The abundance of rain in California this winter has set the stage for a massive superbloom this spring—one that would blanket national and state parks in wildflowers (like Carrizo Plain National Monument, above, during the 2019 bloom). Nat Geo’s Alejandra Borunda explains how to see the flowers—responsibly. | | | |
Today's soundtrack: Jolene, Dolly Parton
Today's newsletter was curated and edited by Sydney Combs, Jen Tse, and David Beard. Have an idea or link to a story you think is right down our alley? Let us know at sydney.combs.-nd@natgeo.com. Happy trails! | | | |
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