Sarah Wells

All Stories by Sarah Wells

  1. Physics

    ‘Feathering’ helps explain Gentoos’ record-breaking swim speed

    Videos and computer analyses reveal the secrets of the penguins’ superspeed. The results could inspire future underwater vehicles.

  2. Physics

    Explainer: What is chaos theory?

    Chaos can help scientists explore subjects from climate change to human brains. Learn about the theory behind this field of science.