Owl feathers can glow pink or magenta under ultraviolet (UV) light.
The glow comes from porphyrins, pigments naturally present in some owl feathers. When exposed to UV light, these pigments fluoresce, producing a striking pink or reddish glow.
As feathers age and wear, their porphyrins gradually break down, causing the intensity of their fluorescence to decrease. Researchers can use these differences to identify newly grown feathers and distinguish different generations of feathers across an owl’s wing.
These fluorescence patterns can also provide clues about a bird’s age by revealing its molt history.
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The glow comes from porphyrins, pigments naturally present in some owl feathers. When exposed to UV light, these pigments fluoresce, producing a striking pink or reddish glow.
As feathers age and wear, their porphyrins gradually break down, causing the intensity of their fluorescence to decrease. Researchers can use these differences to identify newly grown feathers and distinguish different generations of feathers across an owl’s wing.
These fluorescence patterns can also provide clues about a bird’s age by revealing its molt history.
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Did you know?
Women get better sleep when they share their bed with a dog instead of another human.😂
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Women get better sleep when they share their bed with a dog instead of another human.😂
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👃👂 The nose and ears never stop growing, albeit slowly, which is why they appear so large in old age.
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Water may taste strange when it's been left out overnight because it absorbs gases from the air. Don't leave a glass of water open to the air!
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Mercury disrupts aluminum's oxide layer, enabling it to react with air. This forms white, fibrous aluminum oxide, visibly growing as delicate structures.
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According to a recent study,humans have more empathy for dogs than they do for other humans.
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This is a polyclad flatworm, a type of marine flatworm from the order Polycladida.
Its glass-like, translucent body reveals a striking tree-like network of highly branched digestive structures running throughout its body. These structures help distribute digested material, since flatworms lack a specialized circulatory system.
It lives on the seafloor and can glide across surfaces using tiny cilia and muscular movements, creating its graceful, rippling motion.
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Its glass-like, translucent body reveals a striking tree-like network of highly branched digestive structures running throughout its body. These structures help distribute digested material, since flatworms lack a specialized circulatory system.
It lives on the seafloor and can glide across surfaces using tiny cilia and muscular movements, creating its graceful, rippling motion.
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Children as young as 8 in the US are being prescribed off-label GLP-1 weight-loss drugs, sparking debate about the potential long-term health effects
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An elephant's skin can be up to one inch (2.54 centimeters) thick but is so sensitive that it can sense a fly landing on it.
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Anguilla, a 15,000-person island, owns the .ai domain. Its annual revenue from it went from $2.9M (2018) to $86M (2025).
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Scientist wins Nobel Prize, then has the sweetest job: telling his children.
Karl Alexander Deisseroth is an American scientist and physician. He is the D.H. Chen Foundation Professor of Bioengineering and a professor of psychiatry and behavioral sciences at Stanford University. He was jointly awarded the Nobel Prize in Physiology or Medicine in 2026 for his work in optogenetics.
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Karl Alexander Deisseroth is an American scientist and physician. He is the D.H. Chen Foundation Professor of Bioengineering and a professor of psychiatry and behavioral sciences at Stanford University. He was jointly awarded the Nobel Prize in Physiology or Medicine in 2026 for his work in optogenetics.
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