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Category: Science

A fun take on the latest science news with enough data to sink your teeth into. Lagrange Point goes beyond the glossy summary and gets in depth with the research from across the world.

Episode 432 - Using sound and magnetism to navigate the world

May 24, 2021

How do animals use different senses to navigate the world? Can sharks detect magnetic fields? How do sharks travel 20,000km so precisely?  Can sharks use the Earth's magnetic field to navigate? What creatures use magnetism and how do they do it? Bats use echolocation, but what if the speed of sound changes? What if everything moved at 1.25 x speed? How can bats adapt to changes in the speed of sound?

  1. Bryan A. Keller, Nathan F. Putman, R. Dean Grubbs, David S. Portnoy, Timothy P. Murphy. Map-like use of Earth’s magnetic field in sharksCurrent Biology, 2021; DOI: 10.1016/j.cub.2021.03.103
  2. Eran Amichai, Yossi Yovel. Echolocating bats rely on an innate speed-of-sound referenceProceedings of the National Academy of Sciences, 2021; 118 (19): e2024352118 DOI: 10.1073/pnas.2024352118