TED-Ed: Earth's mysterious red glow, explained | Zoe Pierrat

Researchers discovered an unexpected red wavelength from Earth, linked to chlorophyll fluorescence in plants. This phenomenon, observed via satellite, allows real-time monitoring of photosynthesis and ecosystem health. Chlorophyll fluorescence provides a direct measure of photosynthetic activity, offering insights into plant health and environmental changes, such as droughts and phytoplankton blooms.

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