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Evolution: Fast or Slow? Lizards Help Resolve a Paradox.
Why does natural selection appear to happen slowly on long timescales and quickly on short ones? A multigenerational study of four lizard species addresses biology’s “paradox of stasis.”
To Defend the Genome, These Cells Destroy Their Own DNA
Under a microscope, cells in a worm embryo deliberately eliminated one-third of their genome — an uncompromising tactic that may combat harmful genetic parasites.
The Curious Strength of a Sea Sponge’s Glass Skeleton
A glass sponge found deep in the Pacific shows a remarkable ability to withstand compression and bending, on top of the sponge’s other unusual properties.
New Fish Data Reveal How Evolutionary Bursts Create Species
In three bursts of adaptive change, one species of cichlid fish in Lake Tanganyika gave rise to hundreds.
Soil’s Microbial Market Shows the Ruthless Side of Forests
In the “underground economy” for soil nutrients, fungi strike hard bargains and punish plants that won’t meet their price.
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.
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.