Animals
Sleeping glass frogs go into stealth mode by hiding red blood cells
Glass frogs snoozing among leaves blend in by hiding almost all their red blood cells in their liver.
By Susan Milius
MS-LS1-3
Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.
More Stories in MS-LS1-3
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AnimalsPrairie voles can couple up even without the ‘love hormone’
Scientists thought the chemical oxytocin was required to make prairie voles mate. They were wrong.
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AnimalsScientists Say: Metamorphosis
Animals that go through metamorphosis look very different as adults than they did as kids.
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Health & MedicineToddler now thrives after prenatal treatment for a genetic disease
Ayla was treated before birth for the rare, life-threatening Pompe disease. Now a thriving 16-month-old toddler, her treatments will still need to continue.
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AnimalsSplatoon characters’ ink ammo was inspired by real octopuses and squid
In Nintendo’s Splatoon game series, Inklings and Octolings duke it out with weapons that fire ink. How does this ink compare with that of real octopuses and squid?
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EnvironmentBacterial ‘living wires’ could help protect the seas and climate
Long, thin bacteria that conduct electricity may be able to help clean up oil spills and reduce emissions of methane, a powerful greenhouse gas.
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BrainScientists Say: Glymphatic System
The glymphatic system bathes the brain in cleansing fluids during sleep and clears away harmful cellular waste.
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AnimalsLiving mysteries: This critter has 38 times more DNA than you do
The genomes of salamanders are bloated with genetic “parasites.” That extra DNA slows down their lives and strands them in perpetual childhood.
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AnimalsSea sponges spew slow-motion snot rockets to clear out their pores
Sea sponges rely on a sneezing technique to clear their pores. The mucus flushes out debris — and provides a snack for other marine life.
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Health & MedicineTeen arm wrestlers face risk of an unusual elbow break
The pointy part of the inner elbow can break in arm wrestling, especially among teens whose bones are still growing.