Florida bill would create hotline for people to report chemtrails. Bill sponsor Sen. Ileana Garcia also filed a bill to ban ...

The flat bottom of these clouds is the point in the updraft cool enough for condensation. From there upward, there is ...

For clouds and precipitation to develop, tiny airborne particles known as cloud condensation nuclei are required for water ...

You know that beautiful, clear blue sky over Rochester? It’s always a welcome sight—when it happens. But have you ever noticed the thin white streaks that sometimes crisscross the sky? Many people ...

This experiment demonstrates how clouds form in our atmosphere through the interaction of warm and cold air. You'll create a miniature version of this natural process ...

Rainfall triggers bursts of natural nanoparticles, which contribute to cloud formation and additional precipitation over the ...

Contrails are human-made clouds. They are streams of condensation left behind from airplanes and rockets. Exhaust leaves water vapor that freezes into tiny crystals in the cold troposphere.