Life & Evolution

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paper nautilus

In the early 1800s, cephalopod researcher Jeanne Villepreux-Power showed that the paper nautilus (Argonauta argo) creates its own shell. Much of Villepreux-Power’s work was lost in a shipwreck.

dino egg

BLUE HUE  Fossilized eggshells of the dinosaur Heyuannia huangi harbor pigments that would have colored the shells in shades of blue and brown.

fruit ripening

GETTING READY  Ethylene, a gas, acts as a plant hormone. It tells fruits to ripen, roots to grow and seeds to germinate.

Life & Evolution

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