Matt Wood

Monk Parakeets

Escaped pet parrots are now naturalized in 23 U.S. states, study finds

Fossil casts

Study challenges claim that 2-million-year-old fossil is human ancestor

Finger holding a feather

How the brain distinguishes textures—from sandpaper to silk

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Fossilized slime of ancient eel-like creature shakes up vertebrate family tree

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How gut bacteria from infants could prevent food allergy

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How algorithms can create inequality in health care, and how to fix it

Butterfly on a feeder

Single genetic switch changes butterfly wing color, study finds

Prosthetics

$3.4 million grant to support development of brain-controlled prosthetic limbs

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Why motherhood sends octopuses into death spiral

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Ancient fossil shows toddlers could climb trees and walk upright