Earth Is Getting Darker, Which Could Accelerate Global Warming

By Ryan Green SCI AM

The view of Earth from space is famously familiar—bright blue ocean, swirling gyres of white clouds, touches of terrestrial green. The luminosity of this image is the result of the sun’s rays shining on the planet, where they’re either reflected or absorbed by materials on Earth’s surface and in our atmosphere. But a new study that examined Earth’s overall brightness reveals that something eerie is happening to that familiar picture.