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evolutionary biology

Art for "In Ecology Studies and Selfless Ants, He Finds Hope for the Future"
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In Ecology Studies and Selfless Ants, He Finds Hope for the Future

For more than six decades, the influential biologist Edward O. Wilson has drawn connections between evolution, ecology and behavior, often sparking controversies inside and outside of science.

Art for "Rapid Oxygen Changes Fueled an Explosion in Ancient Animal Diversity"
Abstractions blog

Rapid Oxygen Changes Fueled an Explosion in Ancient Animal Diversity

Skyrocketing animal diversity a half-billion years ago was linked to spikes and dips in marine oxygen levels, according to a detailed geological study.

Photo of the female penis structure of the cave insect Neotrogla aurora.
Abstractions blog

Why Evolution Reversed These Insects’ Sex Organs

Among these cave insects, the females evolved to have penises — twice. The reasons challenge common assumptions about sex.

Abstractions blog

Complex Animals Led to More Oxygen, Says Maverick Theory

For decades, researchers have commonly assumed that higher oxygen levels led to the sudden diversification of animal life 540 million years ago. But one iconoclast argues the opposite: that new animal behaviors raised oxygen levels and remade the environment.