Noctilucent or night-shining clouds are rare, high-altitude clouds that glow with a blue, silvery hue at dusk or dawn when the sun shines on them from below the horizon. These ice clouds typically ...

In the tropics, along the band of sky near the equator, clouds and wind run the show. These are juicy clouds that aggregate and disaggregate in agglomerations and that can live a long time, as far as ...