GREENSBORO, N.C. — Have you ever looked up at the sky and noticed how different the clouds can be from one day to the next? Clouds are actually powerful indicators of what’s happening in our ...

Often, these are fair-weather clouds that form when the Sun warms the ground and the ... cumulus clouds can rapidly grow vertically into cumulonimbus. When the edges of these clouds look ...

Often, these are fair-weather clouds that form when the Sun warms the ground and the ... cumulus clouds can rapidly grow vertically into cumulonimbus. When the edges of these clouds look ...

Look! It's a bird. It’s a plane. No, it's a UFO-shaped cloud? The spaceship-looking cloud spotted in the GTA Wednesday afternoon was really just a large cumulonimbus cloud producing a ...