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Two wooden human figures communicating with speech bubbles on yellow background.
Health

Huh? The valuable role of interjections

By Bob Holmes / Knowable Magazine

South America’s green fire taturana caterpillar, Lonomia obliqua, makes a venom that interferes with blood clotting; venoms of other caterpillars can cause long-lasting pain, severe itch, respiratory problems and more.
Animals

The caterpillars that can kill you

By Bob Holmes / Knowable Magazine

The plant-based egg substitutes available today are less than perfect. Food scientists are working hard to improve them — and, maybe, make them better tasting and more nutritious than the real thing.
Health

Cracking the recipe for perfect plant-based eggs

By Bob Holmes / Knowable Magazine

Hummingbirds draw the eye with their bright colors and busy, hovering flight. Biologists are drawn to understand the suite of adaptations they have evolved to survive extreme lifestyles.
Animals

Hummingbirds thrive on an extreme lifestyle. Here’s how.

By Bob Holmes / Knowable Magazine

getting lost
Health

Why do some people always get lost?

By Bob Holmes / Knowable Magazine