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Life’s Big Leaps: Critical Moments in Evolution
How Humans Evolved Supersize Brains
Scientists have begun to identify the symphony of biological triggers that powered the extraordinary expansion of the human brain.
The Woman Who Stared at Wasps
The biologist Joan Strassmann discusses cooperation in social insects, how amoebas can teach us about competition, and why the definition of “organism” needs an overhaul.
Life’s Secrets Sought in a Snowflake
A single genetic change and some clever geometry show how single-celled organisms can band together to form cooperative multicellular entities.
Mongrel Microbe Tests Story of Complex Life
A newly discovered class of microbe could help to resolve one of the biggest and most controversial mysteries in evolution — how simple microbes transformed into the complex cells that produced animals, plants and fungi.