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Humans

Humans

Right is right for righties, plus trading for better decisions and the human spread to Arabia in this week’s news.

Chemistry

Natural pain-killing chemical synthesized

Conolidine — a headache to isolate from the plant that makes it — can now be produced from scratch in the lab, opening the promising compound to study.

Life

Tarantulas shoot silk from their feet

The unique ability may give the heavy spiders a better grip and prevent deadly falls.

Psychology

Geometric minds skip school

Villagers' understanding of lines and triangles raises questions about how people learn the properties of objects in space.