The scale invariance in branch diameter dictates how much smaller a limb should be as it branches and how much investment a tree makes in a few thick branches versus many thin ones. Trees have evolved ...

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Feb. 6, 2025 — Despite new medication, cystic fibrosis often leads to permanent lung damage. Researchers have discovered that the disease causes changes in the immune system early in life ...

Look closely at this image, stripped of its caption, and join the moderated conversation about what you and other students see. By The Learning Network Look closely at this image, stripped of ...