Plus, COVID-19's link to Alzheimer’s.
|  | Wednesday, September 21, 2022 | | | | |
 | | PHOTOGRAPH BY JASPER DOEST | |
Rats show kindness, orcas mourn their dead, and monkeys protest injustice.
Scientists are learning that other species also have complex emotions—and many have much more in common with humans than previously thought.
This is a weighty realization. “If you recognize emotions in animals,” says ethologist Frans de Waal, “then they become morally relevant. They are not the same as rocks. They are sentient beings.”
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 | | PHOTOGRAPH BY EVGENIA ARBUGAEVA | | | |
| Hard-earned data: Photographer Esther Horvath is dedicated to the frigid, fragile poles and those willing to endure the harshest conditions on Earth to study them. In Horvath’s latest post for Nat Geo’s Instagram, researcher Maria Josefa Verdugo holds an ice core taken in the central Arctic Ocean in order to study methane in the Arctic Ocean and atmosphere.
Related: Horvath’s journey on an ice-bound Arctic expedition | | | |
 | | PHOTOGRAPH BY KENT KOBERSTEEN, NATIONAL GEOGRAPHIC IMAGE COLLECTION | | | |
 | | PHOTOGRAPH BY CHERYLE ST. ONGE | | | COVID-19's link to Alzheimer’s: Memory loss. Disorientation. Personality changes. Symptoms that plague long COVID sufferers are all too familiar to the some 6 million Americans with Alzheimer’s (like photographer Cheryle St. Onge’s mom Francis, pictured above). On today’s World Alzheimer’s Day, scientists are digging into the cause of COVID-related neurological problems—and the research could lead to better treatment for both conditions. | | | |
 | | ILLUSTRATION BY ANDREW FAZEKAS | | | Equinox time: Step outside an hour before sunrise tomorrow and Friday and look east for the waning crescent moon as it glides through Leo, the lion constellation. The super bright star Regulus should be easy to spot with unaided eyes, but try using binoculars to see if you can find the giant sickle pattern of stars that mark the neck, mane, and head of the lion figure. As the northern hemisphere marks the autumn equinox tomorrow at 9:04 pm ET, the brightest overhead star for those across the mid-northern latitudes will be Deneb in the constellation Cygnus the swan. | | | |
 | | I have so much hope when I get to meet with the local guardians of the Amazon, and they know that it is more critical now than ever to protect their own knowledge and their own backyards. | | | | Rosa Vásquez Espinoza | Chemical biologist and Nat Geo Explorer
From: Magnifying the world’s tiniest life forms | | |
 | | PHOTOGRAPH BY NAFTALI HILGER, REDUX | | | This is the way: You don’t need a Millennium Falcon to visit the otherworldly landscapes from Star Wars film sets. From the original structures built for A New Hope in Tunisia (like the building pictured above) to the California redwoods that were crawling with spear-wielding Ewoks in Return of the Jedi, these eight travel locations will transport you to a galaxy far away. | | | |
| This newsletter has been curated and edited by Sydney Combs, Heather Kim, David Beard, and Jen Tse. Have you traveled to these Star Wars locations? We'd love to hear from you at david.beard@natgeo.com. And thanks for reading. | |
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