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Talk5 min

Earth's mysterious red glow, explained

Zoe Pierrat · TED

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About

In 2009, a satellite circled Earth, scanning and sorting the wavelengths reflecting off the planet's surface. Researchers noticed something baffling: an unexpected wavelength of unknown origin. They tried looking at Earth with only this wavelength, and saw the planet covered in a red hue of varying intensity. So, what was going on? Zoe Pierrat explores the science of chlorophyll fluorescence. [Directed by Denis Chapon, The Animation Workshop, narrated by Bethany Cutmore-Scott, music by André Aires].

The talk

  1. Earth's mysterious red glow, explained 5 min · TED's player

Credits and licence

Institution
TED
Department
TED-Ed
Speaker
Zoe Pierrat
Year
2021
Level
For everyone
Language
English
Subjects
Teaching and learning
Source
TED
Licence
CC BY-NC-ND 4.0, as TED states it. Non-commercial use only, and no changed versions. TED's terms
Attribution
TED Talks are licensed by TED under Creative Commons BY-NC-ND 4.0 International and are shown here in TED's own player, as TED's usage policy asks.
Who can watch
TED gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed