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409Episodes
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 405 - Studying Supernova, pollution and air quality with trees

November 16, 2020

Studying supernova and air quality with the help of trees. Supernova are some of the most devastating events in the universe, but what is their connection to trees? By studying tree rings we can help piece together the final days of stars. Supernova can cause large spikes in radiation that can be detected in tree rings. Trees do a lot for us but they can also help us track air quality simply and cheaply. Magnets and pine needles can helps us understand air quality. Air quality monitoring can be a matter of running a magnet over some leaves.

References:

  1. G. Robert Brakenridge. Solar system exposure to supernova γ radiationInternational Journal of Astrobiology, 2020; 1 DOI: 10.1017/S1473550420000348
  2. Grant Rea‐Downing, Brendon J. Quirk, Courtney L. Wagner, Peter C. Lippert. Evergreen needle magnetization as a proxy for particulate matter pollution in urban environmentsGeoHealth, 2020; DOI: 10.1029/2020GH000286