New Scientist: Waiting for the sun to come out? It might be unwise to hold your breath. Earth is generally a cloudy place, according to this map.
NASA's Aqua satellite has built up this average view of Earth's surface by monitoring global cloud cover every day since 2002.
Cloud-free areas are dark blue, lighter shades represent more cloud cover, and the most overcast areas are white.
The map reveals three particularly cloudy bands. A white strip runs close to the equator while two wider bands run roughly...