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See North America’s night sky through an Indigenous lens
See North America’s night sky through an Indigenous lens
Giant salamanders are about to take a once-in-a-year trek
Giant salamanders are about to take a once-in-a-year trek
Everything to know about North Cascades National Park
Everything to know about North Cascades National Park
The debate that could reveal the secret of superagers
The debate that could reveal the secret of superagers
10 of the best family-friendly things to do in Tennessee
10 of the best family-friendly things to do in Tennessee
More from Nat Geo
Glow in the Light
- PHOTO OF THE DAY
Glow in the Light
Hornworms fluorescing under ultraviolet light during a nocturnal field survey at Yasuní National Park, Ecuador, in this image from our photography archives. Their blue-green glow is likely produced by fluorescent compounds in the cuticle or epidermis that absorb UV and re-emit visible wavelengths. The adaptive function of this fluorescence is still uncertain, with hypotheses including enhanced shelter or host-plant detection, intraspecific communication, or predator deterrence via unexpected visual cues.Limitless with Chris Hemsworth
Chris Hemsworth takes on three epic challenges to explore science-backed ways to improve our health. He learns to drum for a brain-boosting, surprise stadium gig, climbs a frozen 600-foot wall to explore the benefits of breaking out of our comfort zones, and embraces brutal Special Forces pain training in South Korea—all to discover how we can live longer, better lives.
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Latest Stories
See North America’s night sky through an Indigenous lens
See North America’s night sky through an Indigenous lens
Everything to know about North Cascades National Park
Everything to know about North Cascades National Park
Cruise the Japanese pirate islands on this floating ryokan
Cruise the Japanese pirate islands on this floating ryokan
March 2026 Issue
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In This Issue
Does the naked mole rat hold the secret to a long life?
Does the naked mole rat hold the secret to a long life?
Why did this Greek canal take 2,500 years to build?
Why did this Greek canal take 2,500 years to build?
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