The Earth is reflecting less and less sunlight into space, especially in the Northern Hemisphere. The decline over the last 20 years is clearly measurable, as current NASA data shows.

A research team led by Dr. Norman G. Loeb from NASA’s Langley Research Center investigated how much radiant energy the Earth reflects back into space . To do this, they analyzed satellite data from the last 24 years, including values for solar radiation, albedo, and radiation balance.

The result? Since 2001, both Northern and Southern Hemispheres have become darker and now reflect less sunlight.

Radiation absorption has increased by a total of 0.83 watts per square meter per decade. The Northern Hemisphere is particularly affected, absorbing an additional 0.34 watts per square meter. Although some of thi

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