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Natural Selection

Species Adaptation Genetic Variation Adaptation Sexual Selection Adaptations Human Evolution Charles Darwin Scientific Theories Multilevel Selection Predator-Prey Interactions Genomic Streamlining Bird Predation Muller's Ratchet Behavioral Ecology Predatory Adaptations Phenotypic Variation Darwinian Selection Species Interaction Stick Insects Predatory Behavior Pleiotropy Diversity of Species Artificial Selection Long-Term Evolution Experiment Life History Strategies Anatomical Changes Adaptive Traits Evolutionary Arms Race Survival Skills Agricultural Impact Body Size Morphological Changes

Study Finds Dinosaurs Were Barred From Evolving into Very Small Body Sizes

The authors argue ecological pressures likely imposed a lower size limit on non‑avian dinosaurs, and powered flight allowed the bird lineage to escape that constraint.

Darwin Vindicated: Alpine Saxifraga Confirmed as Carnivorous

University of Minnesota Reports Synthetic 'SpudCell' That Eats, Grows, Divides and Evolves

Study Links Tiny Theropod Arms to Bigger, Stronger Skulls

Ancient DNA Study Finds 479 Human Gene Variants Shaped by Selection

SORS Laser Scans Reveal Contents of Darwin’s Sealed Specimen Jars

Ants Built Bigger Societies by Making Cheaper, ‘Squishier’ Workers, Study Finds

Ant Queens Clone Males of Another Species to Build Hybrid Workforces

Giant Theropods Developed Diverse Skull Biomechanics, Study Shows

Brain Switch in Deer Mice Shows How Evolution Shapes Flee-or-Freeze Responses