Why Do Planes Leave White Streaks in The Sky?

Have you ever seen an airplane high in the sky leave a long trail behind it? That's called a contrail! It's kind of like a cloud, or your breath on a cold day. Jessi and Squeaks explain the special circumstances that make contrails happen! ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: ****** ---------- Looking for SciShow elsewhere on the internet? Facebook: ****** Twitter: ****** Tumblr: ****** Instagram: ****** SOURCES: