New research into the single-celled organism is providing clues about what the early planet looked like – and raising the prospect that we may not be alone in the universe

Los cambios de Meta, paso a paso

Saber teeth are a classic example of convergence, having evolved repeatedly throughout mammalian history. Using 3D morphometrics, biomechanical testing, and a Pareto optimality analysis, Pollock et al. identify functional optimality as a key driver underpinning the repeated evolution of extreme saber-tooth morphologies.