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.

What unexpected phenomenon did researchers observe when analyzing wavelengths from Earth?

How does the process of photosynthesis contribute to the oxygen levels on Earth?